Hi @ansoufly2, I completely understand your frustration. We’ve managed to trace the tab and addon crashes back to an issue with Firefox itself, and as mentioned, are currently working with Mozilla on a fix. We also have a workaround that’s about to go out in our Alpha release channel for community testing too.
In the meantime we would recommend continuing to use Tor Browser 11.0.2 without the use of additional addons or extensions. I have also heard that the tab crashes do not occur on the Safer security level, however I haven’t been able to confirm that personally. If you do happen to try 11.0.2, would you mind letting me know whether it temporarily solved the issue?