Keyboard Shortcuts Form - Default Control = Search Textbox
When selecting the Keyboard Shortcut screen:
Ctrl-Alt-K (or EDIT/Keyboard Shortcuts)
the default control is <OK> so you can simply close that screen. Instead I would suggest changing the default control to the Search text-box, that way we can search and find a command we are looking for immediately and do not have to reach for the mouse to click in the search box or press shift-tab 3 times. And we can still press ESCape (as it currently is) to close that form at any time.

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Myer Pjani commented
Thanks guys, this one was changed / fixed in 13.0. Makes it easier to find a function using the keyboard.
Also fixed - had mentioned somewhere else - that the screen size and position (in Windows) wasn't being maintained and restored. (PP always opened full screen). That was fixed for 13.0 also.