window borders completely disappeared how do I recover?

[Chris Green]

On Mon, Jan 23, 2023 at 01:47:39PM -0600, Jay Ridgley wrote:
> Good afternoon,
> 
>   I am running 22.04.1 LTS and have a situation I have been unable to 
> correct. The borders on all 4 sides have vanished and the window fills 
> the entire screen. I am unable to move, resize or otherwise manipulate 
> the window.  What do I do to recover them so I can resize the window or 
> regain control.
> 
Hit F11, I think.

Alternatively hit CTRL+ALT+F4 (or any function key from F1 to F6),
this will open a command line 'console' window where you can login and
reboot or whatever to sort things out.

-- 
Chris Green