Video: [https://www.youtube.com/watch?v=dJHFBAIHlwI https://www.youtube.com/watch?v=dJHFBAIHlwI] I’m switching tabs with either: • Ctrl+PgUp • Ctrl+PgDown • Ctrl+Tab • Ctrl+Shift+Tab These skip over tabs that appear in every sidebar vertical addon’s list, but stay hidden from the native tab bar. I don’t recall closing them, but perhaps I did at some point, still, why do they get stuck? • I can select them by clicking so they exist • Sidebery’s active tab style gets applied on all of them • Native tab bar shows no active tab • Normally I hide the native tabs but wanted to see how they match • The tabs are there with the inspector (Browser Toolbox) • Issue happens all the time with a few tabs Addition: When I tinker with these broken tabs using the inspector they seem to collapse and get closed. They are no longer selectable and if I switch sidebar addon (and back) they are no longer there. I normally don't use multiple vertical tab bar addons, they are just there to demonstrate the problem. It happens with a single Sidebery as well. In FF settings container tabs I removed the preset containers. This mismatch makes the browser unusable for me. I require working vertical tabs (I come from Vivaldi, wanting to switch).