Hi,
I've been trying to search the web for a fix to this issue or even someone having the same problem as me but I to no avail.
I have transitioned to vertical tabs fairly recently, initially while using Edge, and transitioned back to Firefox after a 1.5 year hiatus. I have noticed that if I have "expand on hover" enabled Firefox, the tabs expand even if I don't hover them, every time I have to click something that is close to the vertical tabs, they start expanding. I noticed it is more frequent if I move my mouse quickly to the left and the only way to stop it expanding is if I randomly click on the webpage before moving back to what I wanted to press.
Is there a setting about expand on hover sensitivity that I can't find? Or is this just a bug? I don't think it's supposed to work this way and it really is causing issues in my workflow, as one of the webpages I use for work has an essential button I have to click on the top left corner and tabs expand 9/10 times I want to click that button.
