Hi,
When I type a method name and use the auto complete with Ctrl+Space and I type the parenthesis and arguments then I undo until the whole method is removed and I redo until the whole method is written back if I undo again, the behavior is really strange.
If I don't register the CompletionProvider or the DelimiterAutoCompleter, this bug does not happen.
I can reproduce it with the "SDI Code Editor" sample.
Best regards,