Chrome DevTools : Html element hover not working

Question

I have this problem for some time, my chrome devtools have a strange behaviour. The hover and highlighting elements don't work for some obscure reason. Please see the gif below, when I unfold a particular element, it will break the devtool. I don't really understand where this is coming from. I compared the settings with a friend, we have the same...

Thank you in advance for the answers :)

Example gif

Answer 1

I´ve been crazy with this and finally found a solution:

Just doing Zoom in on the Elements Tab (Ctrl + mouse scroll wheel) and it will start working again :'-)