This is why Mozilla should stop bothering with the ESR version of Firefox. Too many features of it have to be polyfilled. The ESR cycle made sense when XUL was

This is why Mozilla should stop bothering with the ESR version of Firefox. Too many features of it have to be polyfilled. The ESR cycle made sense when XUL was a thing, but now the extension APIs have been overhauled it should be easier for everyone to use the same browser version and tell outdated browsers to upgrade instead of having to backport features. Microsoft is also to blame here by making new versions of Windows abusive so people stick with outdated OS versions which only have ESR browsers. I just hope someone finds an unpatchable flaw in MS accounts so Microsoft is forced to go back to local accounts in Windows 12.