Same problem here, very frustrating. When I mouse over the tab there is often no x to close.

When I exit video from fullscreen, the browser leaves a large blank panel where the sidebar would be, it doesn't resize properly.

By moving my cursor over the tab, it fixes it.

Screenshot attached.

Whenever I click the plus icon for a new tab and immediately move my mouse to the left back to the previous tab, as the animation for the new tab happens, the X to close icon will not appear on the previous tab.

This makes quickly opening a new tab while closing the old one not possible, and you have to mouse off then back onto the tab.

Same problem here, very frustrating. When I mouse over the tab there is often no x to close.

@ete5 Yeah I have the same problem, I'll hover my mouse over the tab and there's no x to close. I have to change tabs a few times to get them to appear. Very frustrating.