Running Firefox on MacBook Pro iOS v 12.2.1. Recently updated Firefox, now while navigating through tabs, FF randomly selects multiple tabs. When this happens, I can only view the one tab, all others are selected, but I cannot then go to that tab to view. I'm not sure I'm explaining this well. Also, I cannot close the tabs with the X but must right click for drop-down menu to close. I can open new tabs, but that tab is becomes the anchoring selected tab, any other tab I try to go to then becomes selected, as well as every tab in between, none of which I can actually view, they are stuck. I have tried "select all" in hopes of then de-selecting, but deselecting is not an option. This is really holding me up as I have work to do and cannot view the necessary tab. I'm extremely frustrated. LOL, as randomly as it starts, it stops...I wanted to take a screen shot, but no, everything is fine now.