diff --git a/contrib/src/stc/scintilla/src/Editor.cxx b/contrib/src/stc/scintilla/src/Editor.cxx
index 399e659764..d32022ff11 100644
--- a/contrib/src/stc/scintilla/src/Editor.cxx
+++ b/contrib/src/stc/scintilla/src/Editor.cxx
@@ -3292,6 +3292,7 @@ void Editor::ClearAll() {
 	currentPos = 0;
 	SetTopLine(0);
 	SetVerticalScrollPos();
+        InvalidateStyleRedraw();        // RPD: patch #1106564
 }
 
 void Editor::ClearDocumentStyle() {
diff --git a/src/stc/scintilla/src/Editor.cxx b/src/stc/scintilla/src/Editor.cxx
index 399e659764..d32022ff11 100644
--- a/src/stc/scintilla/src/Editor.cxx
+++ b/src/stc/scintilla/src/Editor.cxx
@@ -3292,6 +3292,7 @@ void Editor::ClearAll() {
 	currentPos = 0;
 	SetTopLine(0);
 	SetVerticalScrollPos();
+        InvalidateStyleRedraw();        // RPD: patch #1106564
 }
 
 void Editor::ClearDocumentStyle() {