Firefox upgrade to Ver 99.0 (64-bit) Win 10 today - now seems to be slow to shut down . . . in the past I could close a window (X in TRHC) and immediately click another FF URL shortcut icon on my desktop and the new window would open. It now seems to have a delay as if I click the new icon straight away I get a "Firefox is still running and must be closed" pop-up - there seems to be a deay of at least 10 seconds from clicking the X to being able to open another window.
Am I alone with this issue?
BTW - please don't suggest that I use Chrome - or any other browser ! . . . .