I fixed the issue by opening a new private tab, so I cannot screenshot what the issue looked like or recreate it. I will update this ticket if I manage to recreate the issue. The effect was that the box that firefox rendered into was shifted down on my screen occluding the soft buttons on the bottom and leaving a black space between the notification bar and the top of the webpage/firefox. Touching on the address bar; which I have on the bottom of the firefox window, would have unpredictable results. Sometimes the android soft buttons would be hit, and sometimes the firefox buttons would be hit. The forward and back button in firefox's the triple dot menu were always occluded by the soft buttons. I think clicking the triple dots would cause the soft buttons to be pulled into the foreground, making a subsequent click on the buttons in the bottom of the triple dot context menu impossible to hit. 97.1.0 build 2015860771 Android 11 build 11.2.9.9.LE5ACB Oneplus 9 Pro model LE2127