When I toggle "Present Windows" everything works but the keyboard. No key allows me to interact with the mode; `Esc` neither.
Same here. And also on Arch. It used to stop answering to keyboard input after going to sleep before, and now it just does not work at all.
btw I think the product must be kwin and component effects-present-windows. Not sure how much it would to resolve it though.
Patch https://phabricator.kde.org/D6258
*** This bug has been marked as a duplicate of bug 360841 ***