uMatrix, from the same author of uBO. It's been officially unsupported for years but it still works and it's UI is better then the UI of NoScript and of course much better than the incomprehensible subsystem of uBO that should have replaced uMatrix.
There are community-made forks which fix the cookies problem, like nuTensor.
Not my experience at all. I run uMatrix on every computer I have and it is awesome. Still annoyed it was replaced by uBo which is quite good, but nowhere as nice as uMatrix. Luckily uMatrix still works great.
I wish they'd just scrap the uBo interface and replace it with the uMatrix interface which is far superior.
By the way, I realized that most of the tabs where I'm logged into something run inside their own tab container, so that limits the damage that any bug on handling cookies can do.
[0] https://developer.chrome.com/docs/extensions/develop/migrate...
Right, that could be nice use of AI to extract only the good parts - or, at least, to adjust the rules for https://addons.mozilla.org/en-GB/firefox/addon/requestcontro... by function.