--- a/src/eric7/QScintilla/EditorAssembly.py Tue Jan 10 09:38:34 2023 +0100 +++ b/src/eric7/QScintilla/EditorAssembly.py Tue Jan 10 13:11:52 2023 +0100 @@ -106,7 +106,9 @@ if not self.__aboutToBeClosedCalled: self.__editor.textChanged.disconnect(self.__resetParseTimer) self.__editor.refreshed.disconnect(self.__resetParseTimer) - ericApp().getObject("UserInterface").preferencesChanged.disconnect() + ericApp().getObject("UserInterface").preferencesChanged.disconnect( + self.__preferencesChanged + ) self.__aboutToBeClosedCalled = True