Screen Capture highlight won't disappear

User wrote " The only way to get rid of them is to restart my MacBook Air (Ventura 13.2.1)"

There are many Bug and Security fixes that have been made available since Ventura 13.2.1

Some of which may or may not be related to your original issues

Suggest updating the computer and then test if the computer is till having the same issue

refer below

About the security content of macOS Ventura 13.5.2 )

Apple security releases

Keep your Mac up to date

I ran into the same issue and couldn't find anything in the forums to explain it. I ended up fixing the issue by playing around with the option settings on the screen capture tool. I clicked on options and unchecked what was checked and the window finally went away. I then rechecked the same items and the screen capture worked normally after that. So there's some sort of bug in this app but at least that fixed it so I didn't have to reboot.

Hey, I just had this issue, and it turns out I accidentally was recording that section of my screen. You can stop it by pressing the stop icon in the top bar, or change the style from record to capture before taking the shot.

The Author of the Original question was running Ventura 13.2.1 when in fact the current version, at that time, was Ventura 13.5.2

Right now, the current Ventura version is 13.6.7

At this very late stage in developing and bug fixing of Ventura, most bugs probably only related to Security Updates