This has been happening for a while now, it’s been happening multiple times a day and at random times. I can’t switch to other tabs or if I want to switch to a tab that’s like 5 tabs away, it will just group the tabs together. I can’t use the X button either to exit these tabs. While this happens my Mac acts weird and highlights random things as well. If I want to open a link it will open a whole new window for that tab although I turned that feature off in preferences. The only way I can fix this temporarily is to shut my Mac down and then get back in.