No "X" close button on popups

Using latest Avast free and Firefox. Since the last upgrade, the right edge of most of the pop-ups has been cut off, perhaps the last 10% of the right side. So the [close] button is missing. This is true for the popups from the tray and the Browser popup that says it’s averted some malicious activity. I have to click the radio button on the taskbar to close those.

Post a screenshot.

One is the tray popup, the other is the middle of the screen window.

The other one…

OK, I’ll forward it…

Hello rainagain777, I’m trying to reproduce it, but in my case, it is ok (Win7 + Win10). I’m using: premium 19.9.2394 (build 19.9.4824.537) UI 417. Do you have the same build or older? Feel free to contact me directly on petr.blatny@avast.com
Thank you