--- a/QScintilla/Editor.py	Mon Dec 11 18:29:04 2017 +0100
+++ b/QScintilla/Editor.py	Mon Dec 11 19:17:20 2017 +0100
@@ -4660,6 +4660,9 @@
             # auto-completion is disabled
             return
         
+        if self.isListActive():
+            self.cancelList()
+        
         if self.__completionListHookFunctions or \
            self.__completionListAsyncHookFunctions:
             if auto and Preferences.getEditor("AutoCompletionTimeout"):