Tab key effect always showing
Hi, I'm having a really small issue that for some people it might not be an issue at all. The thing is that in some apps (specifically in Safari and Zoom) something is always highlighted as if I had pressed the tab key. It's really hard to explain but for example, if I click on Safari preferences the general tab appears with a blue border (again, as if I had pressed tab). I'll attach a picture showing what I mean.This also happens in the Zoom app. It select the input button or the full screen button out of nowhere.
I don't know if maybe something changed in the accessibility preferences on my systems setting or what, but this is really driving me crazy. Help please!!
MacBook Pro 13″, macOS 10.15