They don't keep breaking extensions. They HAD TO drop XUL, because you couldn't have multi-process, sandboxing etc. with it. I bet if they kept XUL, people wou

They don't keep breaking extensions. They HAD TO drop XUL, because you couldn't have multi-process, sandboxing etc. with it. I bet if they kept XUL, people would complain about the other things, in Fact they used to.