Corel USER to USER Web Board

Using PSP 2021 Pro on Windows 10. Whenever I close the Print Layout editor, I get this error. The error is on a white page that goes full-screen. I snipped out the relevant part of the message but the full-screen error is terribly annoying. Why the hell do you think that full-screen on a regular PC ...

Is there a keystroke for "Apply Changes"? I hate having to move my mouse cursor from the canvas up to the toolbar to apply changes; especially from the Text tool. Is there a keyboard shortcut for "Apply Changes" so that I can stay in the canvas?

It's a small thing, but it's annoying.

I hate it that I cannot use the startup page without it going full-screen. I don't use a touch screen, and I have a 55" 4k display. Full-screen is ridiculous. I window the app, then close it, but when I re-start it, it goes full-screen. That's terribly presumptuous of Corel. The only way to disable ...