Package: firefox Version: 121.0-0 Severity: important The vertical tab list (accessed via the 'down arrow' in the tab bar, to the right of the new tab '+' button) is now no longer working correctly for Hi-DPI as of version 121.0-1.
I have many windows with many tabs. Previously with version 120 I had no problem scrolling the entire tab list. Now, depending upon which tab I have selected, I cannot scroll a certain number of tabs at the top and/or bottom of the list into view. Notably when trying to scroll to the very top/bottom I see the scrollbar going out of view beyond the limits of the screen height. I have a Hi-DPI screen set to 200% scaling. Experimenting, if I switch to 100% scaling then the problem goes away, being able to scroll the full list as previously (with the list drawn with 100% screen height regardless of whether the window is maximized or not). So it seems that a small regression was introduced.