I'll check the stable 2.1 branch. As this is only cosmetics, it will not trigger a new bug fix release.
But if there will be one in future, I'd be glad to patch this.
Generally we have to check another issue with this method. As changeEvent() is an override, there maybe problems because the event is not forwarded to the base class. This is true for the latest sources too.
Many thanks for your efforts.
investing less than half an hour into Search function can save hours or days of waiting for a solution