I have logged in using a different account on a different browser to collect some info and to answer some questions that had been asked by the Devs. 1) When someone has the issue where it stops changing tabs, have them look at their "Attributes and Abilities" (the Roll20 tab next to the "Character Sheet" tab, not anything in the Pathfinder sheet). Have them try tabbing around a few times. Does the value for the "tab" attribute in the Attributes and Abilities section get updated to different numbers, even though their sheet isn't changing tabs? The tab attribute does not increment when trying to switch tabs in the browser (firefox) that has the issue. When looking at the tab attribute form another browser (chrome) I do see the tab attribute update every time I click on a tab in the browser (firefox) with the issue. A few other tidbits. If in the browser (FF) with the issue I click the edit button and then hit cancel, the tab which I last clicked is now displayed, but I still can't click on other tabs. So for example if I was on Core and then clicked on NPC, the tab would not update to NPC. Then I click Edit and then Cancel. When the window is "redrawn" it's now on NPC, but clicking on Attacks does nothing. I also tried to update the tabs attribute in the browser (FF) with the issue and saw the tab change accordingly on the other browser (Chrome), but it did not change the tab in the browser (FF) with the issue. 2) Have you ever experienced this issue on the tabs for changing the "Spell Levels" on the Spells page? For example, when the tabs aren't working can you still use the "Spell Levels" tabs (if you're on the "All" tab or the"Spells" tab)? I was able to click around on the spells class tabs, but then they froze up quickly after (on my 3rd or 4th click). I then clicked on the spells tabs and they froze up after my 3rd click. 1. Open a new tab in your browser and navigate to the same game you are in, and view the same character sheet. Now, go back to the original browser tab and click the sheet tabs. If it were working correctly, the sheet in the second browser tab should be changing views. What actually happens? I opened another tab, went back into the game (so I am now logged in twice from FF with the same user) and opened the same character sheet. It works fine. I can navigate between tabs without issue. The tabs do not update in the broken tab. Clicking on tabs in the broken tab, updates the tabs on the working tab, but the tabs on the broken tab do not update. 2. Do other players see the view changing? If another player clicks that same sheet, does it work for them or is that sheet also broken for them? Works for them as described above and in this comment . 3. When a sheet is broken for a player, have that player try a different sheet. Is that other sheet also broken, or does it work? Other character sheets work as expected. I clicked around a bunch on two other character sheets and no issue. I reopened the character sheet with the locked up tabs and they were still locked up. So it looks like just a single character sheet gets stuck, but the browser itself is fine. 4. Like I mentioned above: (for the player who's sheet is broken) clear the console log and try to click a few different tabs, then paste that blurb here See previous comment