Every time I log in with my Firefox account on a new device, the exceptions I set under Privacy & Security -> Cookies and Site Data -> Clear Cookies and Site Data When Firefox Closes -> Manage Exceptions disappear. This should definitely be included in synchronization. Let's be clear: I don't want my cookies saved so I can log into all my accounts every time. I just want my exceptions to be included in synchronization. Firefox could also develop a tool for this: an add-on to easily add websites to exceptions. I don't want to download an external add-on and install it every time for something this simple. Nobody wants that. I also think all my settings should be included in the synchronization scope.