Help for KeepassX [SOLVED]

[Stefano_IT]

I have a trivial problem (visualization) with this program.
After creating the database I was entering the data when by pressing a few keys by mistake the program window filled the whole screen.
I've already tried to see if I can resize the program, press F11 and look for options.
The only way is to go out (Database - Exit) - on another computer it opens normally (in the middle of the window) and all the way there are the classic buttons to close or minimize that I can't see here.
I have already tried to uninstall / reinstall but without success.
I thought I would also delete the profile folder to reset each setting but I can't find it.
Sorry for the bad translation.

[Stefano_IT]

I add a screenshot. - so it appears on another PC.
At the top right are the buttons and reads the "Keepassx" inscription in the center.
On the computer where I have the problem instead I don't see the word "Keepass" and I don't even see the buttons, it seems that I have inadvertently created a full screen version and I can't reduce or resize in any way

[Stefano_IT]

I communicate that I managed to solve.
ALT + TAB made a drop-down menu appear where I found "Full Screen" pressing it the application has returned to its normal size with visible buttons.