I have been experiencing issues of extreme CPU consumption. When I look at Task Manager, I see tabs consuming resources - tabs I have closed. See attached open tabs screen shot, and task manager screen shot. The Register (tech website) is clearly consuming CPU and memory, even though I closed that tab yesterday. WTF is going on? Linux Mint 22.1 Cinnamon Cinnamon 6.8.0-90-generic Firefox is installed from the package manager, not as a flatpack. Extensions: Privacy Badger, and uBlock Origin are installed and active on most tabs. (YouTube has become temperamental about privacy extensions, and a few other Google-related sites as well) CookieAutoDelete - though that just deletes cookies/sites data some seconds after a tab is closed. The Register example is just for reference. The service that seems to consume large quantities of CPU, even after I close all related tabs is YouTube. It has on occasion made the system crash.