Grey rectangle box on my MacBook desktop screen

[Anila W]

Hi I am getting a blank grey rectangle box on the top centre of my MacBook desktop screen.
I tried changing zoom options, force quitting Finder (relaunched) and also killall dock command on terminal but nothing works.
Can someone suggest how I can get rid of it as it is obstructing my view?
Thanks in advance!

 

[Cory Cooper]

Hello and welcome.

Haven't ever seen that I must say.

-Does this persist after a restart?
-Does it only happen when Safari is open/running?

It may be some third-party Safari Extension, user Startup Item, or malware.

C

 

[otrebsu]

Hello and welcome.

Haven't ever seen that I must say.

-Does this persist after a restart?
-Does it only happen when Safari is open/running?

It may be some third-party Safari Extension, user Startup Item, or malware.

C

ANSWER:

DOCK SETTINGS > DESKTOP & Stage Manager>
Click wallpaper to reveal desktop. change to> (Only in Stage Manager).