diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index 1a6bab6c9..5512fc6d8 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -190,6 +190,7 @@ No native ARM64 grepWin build exists. The ARM64 build uses `grepWin-x64_portable
 - **Editor config**: `.editorconfig` enforces UTF-8/CRLF for source files, 4-space indentation for C/C++; Lexilla code uses tabs (preserved from upstream)
 - **File encoding rules** (must be respected when creating or editing these files):
   - `language\*\*.rc` — **UTF-8 without BOM**. Never write or save these files with a UTF-8 BOM. Use `Build\rc_to_utf8.cmd` to strip accidental BOMs.
+    - **PowerShell pitfall**: `[System.Text.Encoding]::UTF8` writes **with** BOM. Always use `[System.Text.UTF8Encoding]::new($false)` when writing `.rc` files from PowerShell scripts.
   - `Build\Notepad3.ini`, `Build\minipath.ini` — **UTF-8 with BOM** (BOM = `EF BB BF`). These INI reference files must retain the BOM.
 - **String safety**: Uses `strsafe.h` throughout; deprecated string functions are disabled
 
diff --git a/CLAUDE.md b/CLAUDE.md
index 331df0dbf..6a484406b 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -275,6 +275,7 @@ No native ARM64 grepWin build exists. The ARM64 build uses `grepWin-x64_portable
 - `.editorconfig` enforces UTF-8/CRLF for source, 4-space indent for C/C++; Lexilla code uses tabs (preserved from upstream)
 - **File encoding rules** (must be respected when creating or editing these files):
   - `language\*\*.rc` — **UTF-8 without BOM**. Never write or save these files with a UTF-8 BOM. Use `Build\rc_to_utf8.cmd` to strip accidental BOMs.
+    - **PowerShell pitfall**: `[System.Text.Encoding]::UTF8` writes **with** BOM. Always use `[System.Text.UTF8Encoding]::new($false)` when writing `.rc` files from PowerShell scripts.
   - `Build\Notepad3.ini`, `Build\minipath.ini` — **UTF-8 with BOM** (BOM = `EF BB BF`). These INI reference files must retain the BOM.
 - String safety via `strsafe.h` throughout; deprecated string functions are disabled
 
diff --git a/language/common_res.h b/language/common_res.h
index 120c66dcf..91c69cbba 100644
--- a/language/common_res.h
+++ b/language/common_res.h
@@ -873,6 +873,7 @@
 #define IDM_TRAY_EXIT                   43701
 #define IDM_SETPASS                     43702
 #define IDM_EDIT_INSERT_GUID            43705
+#define IDM_EDIT_STOP_PASTEBOARD        43706
 
 
 #define IDS_ENC_ANSI                    61000
diff --git a/language/np3_af_za/menu_af_za.rc b/language/np3_af_za/menu_af_za.rc
index 0ac02c43e..f85feec77 100644
--- a/language/np3_af_za/menu_af_za.rc
+++ b/language/np3_af_za/menu_af_za.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Wysig"
     BEGIN
         MENUITEM "Document &Read Only"                      IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "O&ngedaan\tCtrl+Z",                       IDM_EDIT_UNDO
         MENUITEM "Oo&rdoen\tCtrl+Y",                        IDM_EDIT_REDO
diff --git a/language/np3_be_by/menu_be_by.rc b/language/np3_be_by/menu_be_by.rc
index 33535ffcf..f73c32e99 100644
--- a/language/np3_be_by/menu_be_by.rc
+++ b/language/np3_be_by/menu_be_by.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Праўка"
     BEGIN
         MENUITEM "Дакумент толькі для &чытання"     IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "Ад&мена\tCtrl+Z",                 IDM_EDIT_UNDO
         MENUITEM "&Паўтор\tCtrl+Y",                 IDM_EDIT_REDO
diff --git a/language/np3_de_de/menu_de_de.rc b/language/np3_de_de/menu_de_de.rc
index 732a88871..71db440c9 100644
--- a/language/np3_de_de/menu_de_de.rc
+++ b/language/np3_de_de/menu_de_de.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Bearbeiten"
     BEGIN
         MENUITEM "&Dokument Nur Lesen"                      IDM_VIEW_READONLY
+        MENUITEM "Zwischenablage &Überwachung abbrechen",   IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Rückgängig\tCtrl+Z",                     IDM_EDIT_UNDO
         MENUITEM "&Wiederholen\tCtrl+Y",                    IDM_EDIT_REDO
diff --git a/language/np3_el_gr/menu_el_gr.rc b/language/np3_el_gr/menu_el_gr.rc
index dd6f92185..7d7275bb7 100644
--- a/language/np3_el_gr/menu_el_gr.rc
+++ b/language/np3_el_gr/menu_el_gr.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Επεξεργασία"
     BEGIN
         MENUITEM "Document &Read Only"            IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "Αναίρε&ση\tCtrl+Z",             IDM_EDIT_UNDO
         MENUITEM "Επανάλη&ψη ενέργειας\tCtrl+Y",  IDM_EDIT_REDO
diff --git a/language/np3_en_gb/menu_en_gb.rc b/language/np3_en_gb/menu_en_gb.rc
index 5ac0af694..f7f25bbdc 100644
--- a/language/np3_en_gb/menu_en_gb.rc
+++ b/language/np3_en_gb/menu_en_gb.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Edit"
     BEGIN
         MENUITEM "Document &Read Only"          IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Undo\tCtrl+Z",               IDM_EDIT_UNDO
         MENUITEM "&Redo\tCtrl+Y",               IDM_EDIT_REDO
diff --git a/language/np3_en_us/menu_en_us.rc b/language/np3_en_us/menu_en_us.rc
index 12da60f64..6dbc3df4c 100644
--- a/language/np3_en_us/menu_en_us.rc
+++ b/language/np3_en_us/menu_en_us.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Edit"
     BEGIN
         MENUITEM "Document &Read Only"          IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Undo\tCtrl+Z",               IDM_EDIT_UNDO
         MENUITEM "&Redo\tCtrl+Y",               IDM_EDIT_REDO
diff --git a/language/np3_es_es/menu_es_es.rc b/language/np3_es_es/menu_es_es.rc
index 83c7593f0..f71c7886c 100644
--- a/language/np3_es_es/menu_es_es.rc
+++ b/language/np3_es_es/menu_es_es.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Edición"
     BEGIN
         MENUITEM "Documento &Sólo lectura"                  IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Deshacer\tCtrl+Z",                       IDM_EDIT_UNDO
         MENUITEM "Re&hacer\tCtrl+Y",                        IDM_EDIT_REDO
diff --git a/language/np3_fi_fi/menu_fi_fi.rc b/language/np3_fi_fi/menu_fi_fi.rc
index 204443114..6ab7aeb39 100644
--- a/language/np3_fi_fi/menu_fi_fi.rc
+++ b/language/np3_fi_fi/menu_fi_fi.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Muokkaa"
     BEGIN
         MENUITEM "Dokumentti Vain &luettavissa"          IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "K&umoa\tCtrl+Z",               IDM_EDIT_UNDO
         MENUITEM "&Tee uudelleen\tCtrl+Y",               IDM_EDIT_REDO
diff --git a/language/np3_fr_fr/menu_fr_fr.rc b/language/np3_fr_fr/menu_fr_fr.rc
index ff24eba03..952a13093 100644
--- a/language/np3_fr_fr/menu_fr_fr.rc
+++ b/language/np3_fr_fr/menu_fr_fr.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Edition"
     BEGIN
         MENUITEM "Document en &lecture seule"               IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "Défaire\tCtrl+Z",                         IDM_EDIT_UNDO
         MENUITEM "&Rétablir\tCtrl+Y",                       IDM_EDIT_REDO
diff --git a/language/np3_hi_in/menu_hi_in.rc b/language/np3_hi_in/menu_hi_in.rc
index 559081998..3a93f4387 100644
--- a/language/np3_hi_in/menu_hi_in.rc
+++ b/language/np3_hi_in/menu_hi_in.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "संपादन (&E)"
     BEGIN
         MENUITEM "दस्तावेज़ केवल पढ़ने योग्य (&R)"         IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "पूर्ववत करें (&U)\tCtrl+Z",               IDM_EDIT_UNDO
         MENUITEM "फिर से करें (&R)\tCtrl+Y",              IDM_EDIT_REDO
diff --git a/language/np3_hu_hu/menu_hu_hu.rc b/language/np3_hu_hu/menu_hu_hu.rc
index b3520b124..9697a6977 100644
--- a/language/np3_hu_hu/menu_hu_hu.rc
+++ b/language/np3_hu_hu/menu_hu_hu.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Szerkesztés"
     BEGIN
         MENUITEM "&Csak olvasható dokumentum"   IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Visszavonás\tCtrl+Z",        IDM_EDIT_UNDO
         MENUITEM "&Újra\tCtrl+Y",               IDM_EDIT_REDO
diff --git a/language/np3_id_id/menu_id_id.rc b/language/np3_id_id/menu_id_id.rc
index 0b4e1617b..0022a1e0b 100644
--- a/language/np3_id_id/menu_id_id.rc
+++ b/language/np3_id_id/menu_id_id.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Sunting"
     BEGIN
         MENUITEM "Mode Hanya &Baca"                  IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Urungkan\tCtrl+Z",                IDM_EDIT_UNDO
         MENUITEM "Kem&balikan\tCtrl+Y",              IDM_EDIT_REDO
diff --git a/language/np3_it_it/menu_it_it.rc b/language/np3_it_it/menu_it_it.rc
index d5be08c19..1d4d949d8 100644
--- a/language/np3_it_it/menu_it_it.rc
+++ b/language/np3_it_it/menu_it_it.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Modifica"
     BEGIN
         MENUITEM "Documento in sola &lettura"             IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Annulla\tCtrl+Z",                      IDM_EDIT_UNDO
         MENUITEM "&Ripristina\tCtrl+Y",                   IDM_EDIT_REDO
diff --git a/language/np3_ja_jp/menu_ja_jp.rc b/language/np3_ja_jp/menu_ja_jp.rc
index d4c0396db..c00242101 100644
--- a/language/np3_ja_jp/menu_ja_jp.rc
+++ b/language/np3_ja_jp/menu_ja_jp.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "編集(&E)"
     BEGIN
         MENUITEM "閲覧専用(&R)"                               IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "元に戻す(&U)\tCtrl+Z",                       IDM_EDIT_UNDO
         MENUITEM "やり直し(&R)\tCtrl+Y",                        IDM_EDIT_REDO
diff --git a/language/np3_ko_kr/menu_ko_kr.rc b/language/np3_ko_kr/menu_ko_kr.rc
index 0cfd3cc43..9e3c935cd 100644
--- a/language/np3_ko_kr/menu_ko_kr.rc
+++ b/language/np3_ko_kr/menu_ko_kr.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "편집(&E)"
     BEGIN
         MENUITEM "읽기 전용 문서(&R)"          IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "실행 취소(&U)\tCtrl+Z",               IDM_EDIT_UNDO
         MENUITEM "다시 실행(&R)\tCtrl+Y",               IDM_EDIT_REDO
diff --git a/language/np3_nl_nl/menu_nl_nl.rc b/language/np3_nl_nl/menu_nl_nl.rc
index 264fb63e3..d0721d83a 100644
--- a/language/np3_nl_nl/menu_nl_nl.rc
+++ b/language/np3_nl_nl/menu_nl_nl.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "Bew&erken"
     BEGIN
         MENUITEM "Document &Read Only"                              IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Ongedaan maken\tCtrl+Z",                         IDM_EDIT_UNDO
         MENUITEM "Op&nieuw uitvoeren\tCtrl+Y",                      IDM_EDIT_REDO
diff --git a/language/np3_pl_pl/menu_pl_pl.rc b/language/np3_pl_pl/menu_pl_pl.rc
index 547869c83..e7d076851 100644
--- a/language/np3_pl_pl/menu_pl_pl.rc
+++ b/language/np3_pl_pl/menu_pl_pl.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Edycja"
     BEGIN
         MENUITEM "Dokument &tylko do odczytu"            IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Cofnij\tCtrl+Z",                      IDM_EDIT_UNDO
         MENUITEM "&Powtórz\tCtrl+Y",                     IDM_EDIT_REDO
diff --git a/language/np3_pt_br/menu_pt_br.rc b/language/np3_pt_br/menu_pt_br.rc
index f96856e09..1ea34dade 100644
--- a/language/np3_pt_br/menu_pt_br.rc
+++ b/language/np3_pt_br/menu_pt_br.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Editar"
     BEGIN
         MENUITEM "Documento somente leitu&ra"       IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Desfazer\tCtrl+Z",               IDM_EDIT_UNDO
         MENUITEM "&Refazer\tCtrl+Y",                IDM_EDIT_REDO
diff --git a/language/np3_pt_pt/menu_pt_pt.rc b/language/np3_pt_pt/menu_pt_pt.rc
index d39e566df..e29ef28b1 100644
--- a/language/np3_pt_pt/menu_pt_pt.rc
+++ b/language/np3_pt_pt/menu_pt_pt.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Editar"
     BEGIN
         MENUITEM "Documento só de leitu&ra"                IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "An&ular\tCtrl+Z",                        IDM_EDIT_UNDO
         MENUITEM "&Refazer\tCtrl+Y",                       IDM_EDIT_REDO
diff --git a/language/np3_ru_ru/menu_ru_ru.rc b/language/np3_ru_ru/menu_ru_ru.rc
index c14468434..22ac82b13 100644
--- a/language/np3_ru_ru/menu_ru_ru.rc
+++ b/language/np3_ru_ru/menu_ru_ru.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Правка"
     BEGIN
         MENUITEM "Документ только для чтени&я"          IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Отмена\tCtrl+Z",                     IDM_EDIT_UNDO
         MENUITEM "&Повтор\tCtrl+Y",                     IDM_EDIT_REDO
diff --git a/language/np3_sk_sk/menu_sk_sk.rc b/language/np3_sk_sk/menu_sk_sk.rc
index 2c269c998..445056f20 100644
--- a/language/np3_sk_sk/menu_sk_sk.rc
+++ b/language/np3_sk_sk/menu_sk_sk.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "&Upraviť"
     BEGIN
         MENUITEM "Dokument &Len na čítanie"                 IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Späť\tCtrl+Z",                           IDM_EDIT_UNDO
         MENUITEM "&Znova\tCtrl+Y",                          IDM_EDIT_REDO
diff --git a/language/np3_sv_se/menu_sv_se.rc b/language/np3_sv_se/menu_sv_se.rc
index 993b63af1..38cd25997 100644
--- a/language/np3_sv_se/menu_sv_se.rc
+++ b/language/np3_sv_se/menu_sv_se.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "Redigera"
     BEGIN
         MENUITEM "Skrivskydda dokument"                              IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "Ångra\tCtrl+Z",                                   IDM_EDIT_UNDO
         MENUITEM "Gör om\tCtrl+Y",                                  IDM_EDIT_REDO
diff --git a/language/np3_tr_tr/menu_tr_tr.rc b/language/np3_tr_tr/menu_tr_tr.rc
index 181565597..bcd1697b8 100644
--- a/language/np3_tr_tr/menu_tr_tr.rc
+++ b/language/np3_tr_tr/menu_tr_tr.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "Dü&zenle"
     BEGIN
         MENUITEM "Belge salt &okunur"                                 IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "&Geri al\tCtrl+Z",                                  IDM_EDIT_UNDO
         MENUITEM "&Yinele\tCtrl+Y",                                   IDM_EDIT_REDO
diff --git a/language/np3_vi_vn/menu_vi_vn.rc b/language/np3_vi_vn/menu_vi_vn.rc
index d98f954d8..ccfb59cbe 100644
--- a/language/np3_vi_vn/menu_vi_vn.rc
+++ b/language/np3_vi_vn/menu_vi_vn.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "Chỉnh sửa(&E)"
     BEGIN
         MENUITEM "Tài liệu chỉ đọc(&R)"                          IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "Hoàn tác(&U)\tCtrl+Z",                      IDM_EDIT_UNDO
         MENUITEM "Làm lại(&R)\tCtrl+Y",                      IDM_EDIT_REDO
diff --git a/language/np3_zh_cn/menu_zh_cn.rc b/language/np3_zh_cn/menu_zh_cn.rc
index b9f9e368e..1c49db1c1 100644
--- a/language/np3_zh_cn/menu_zh_cn.rc
+++ b/language/np3_zh_cn/menu_zh_cn.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "编辑(&E)"
     BEGIN
         MENUITEM "只读(&R)"                                   IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "撤销(&U)\tCtrl+Z",                          IDM_EDIT_UNDO
         MENUITEM "重做(&R)\tCtrl+Y",                          IDM_EDIT_REDO
diff --git a/language/np3_zh_tw/menu_zh_tw.rc b/language/np3_zh_tw/menu_zh_tw.rc
index 4fbdc707d..3feff3658 100644
--- a/language/np3_zh_tw/menu_zh_tw.rc
+++ b/language/np3_zh_tw/menu_zh_tw.rc
@@ -155,6 +155,7 @@ BEGIN
     POPUP "編輯(&E)"
     BEGIN
         MENUITEM "唯讀(&R)"                        IDM_VIEW_READONLY
+        MENUITEM "Stop Clipboard &Monitoring",          IDM_EDIT_STOP_PASTEBOARD
         MENUITEM SEPARATOR
         MENUITEM "復原(&U)\tCtrl+Z",                          IDM_EDIT_UNDO
         MENUITEM "取消復原(&R)\tCtrl+Y",                       IDM_EDIT_REDO
diff --git a/src/Notepad3.c b/src/Notepad3.c
index e3f61f5e4..849331038 100644
--- a/src/Notepad3.c
+++ b/src/Notepad3.c
@@ -2284,10 +2284,12 @@ LRESULT CALLBACK MainWndProc(HWND hwnd, UINT umsg, WPARAM wParam, LPARAM lParam)
     //  break;
 
     case WM_DRAWCLIPBOARD:
-        if (!s_bLastCopyFromMe) {
-            s_iLastCopyTime = GetTicks_ms();
-        } else {
-            s_bLastCopyFromMe = false;
+        if (s_flagPasteBoard) {
+            if (!s_bLastCopyFromMe) {
+                s_iLastCopyTime = GetTicks_ms();
+            } else {
+                s_bLastCopyFromMe = false;
+            }
         }
 
         if (s_hwndNextCBChain) {
@@ -2300,7 +2302,7 @@ LRESULT CALLBACK MainWndProc(HWND hwnd, UINT umsg, WPARAM wParam, LPARAM lParam)
             s_hwndNextCBChain = (HWND)lParam;
         }
         if (s_hwndNextCBChain) {
-            SendMessage(s_hwndNextCBChain,WM_CHANGECBCHAIN,lParam,wParam);
+            SendMessage(s_hwndNextCBChain,WM_CHANGECBCHAIN,wParam,lParam);
         }
         break;
 
@@ -4166,6 +4168,7 @@ LRESULT MsgInitMenu(HWND hwnd, WPARAM wParam, LPARAM lParam)
     OpenClipboard(hwnd);
     EnableCmd(hmenu, IDM_EDIT_CLEARCLIPBOARD, CountClipboardFormats());
     CloseClipboard();
+    EnableCmd(hmenu, IDM_EDIT_STOP_PASTEBOARD, s_flagPasteBoard);
 
     EnableCmd(hmenu, IDM_EDIT_MOVELINEUP, !ro);
     EnableCmd(hmenu, IDM_EDIT_MOVELINEDOWN, !ro);
@@ -5138,6 +5141,17 @@ static bool _HandleEditBasicCommands(HWND hwnd, UINT umsg, WPARAM wParam, LPARAM
         break;
 
 
+    case IDM_EDIT_STOP_PASTEBOARD:
+        KillTimer(Globals.hwndMain, ID_PASTEBOARDTIMER);
+        ChangeClipboardChain(Globals.hwndMain, s_hwndNextCBChain);
+        s_hwndNextCBChain = NULL;
+        s_flagPasteBoard = false;
+        s_iLastCopyTime = 0;
+        s_bLastCopyFromMe = false;
+        UpdateToolbar_Now(Globals.hwndMain);
+        break;
+
+
     case IDM_EDIT_SELECTALL:
         SciCall_SelectAll();
         break;
@@ -12294,6 +12308,8 @@ void CALLBACK PasteBoardTimerProc(HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD
     UNREFERENCED_PARAMETER(idEvent);
     UNREFERENCED_PARAMETER(dwTime);
 
+    if (!s_flagPasteBoard) { return; }
+
     if ((s_iLastCopyTime > 0) && ((GetTicks_ms() - s_iLastCopyTime) > 200)) {
 
         if (SciCall_CanPaste()) {