Firefox for OSX has been having a problem with opening in a new tab for some time (since version 98 or something). First, you can have, for example, 5-6 tabs open, then suddenly opening 7th it hangs and does not open the address. Refreshing it, the address disappears and the tab is still empty, there is also no previously visible http address. Closing this tab causes every next one to freeze. Closing another (one of previously open) doesn't change the situation, but closing two sometimes let opens another, but only one. After several attempts, we have to close another one, and so after several attempts, we have 1 open active and no possibility to open a new tab and the address contained in it. It doesn't matter if it's from favorites, google search or manually typed. The only thing that helps is to force the browser to install the old version ( 96 ) then everything returns to normal. Allowing an update to 101 or later will prevent you from using Firefox after a few minutes. Current version 111 and same problem.