You found a bug! We've classified it as
We encourage you to continue the discussion and to find an acceptable workaround while we work on a permanent fix.
Thank you for confirming!
I am afraid my workaround causes a backside effect. It is turning down key navigation and a KeyMap.
Though it is partially reproducible even without my override. I reported it here.
So, I assume this was not fixed in 4.2.1. I read through the release notes and didn't see any mention of this defect number.
Any thoughts on when this will be fixed?