How do you avoid/deal with Firefox website incompatibilities? This happened on consecutive visits to two different websites today before I posted here. In the first one, I disabled Ublock, cleared cache and cookies, and the site loaded, I then enabled Ublock with no error prompted. Then I got a tab crash on Youtube. I wouldn't call tab crashes a daily occurrence for me, but I'm accustomed to them Gmail tab crash just now. It just happened now with another website tab crash. i'm reverting back to 147.01 Is there any way to get the root of this. The only recent changes I can think of are browser (147.0.2 yesterday) and addon updates. Should I post my list of addons?