Komunitné fórum Firefox

I have been using Firefox for 20 years, it always works perfectly until the 2 last update and these problems are driving me crazy!

Since the last 2 updates (137.0.1 (aarch64) on MacOS Sequoia 15.4), sometimes when I click on a tab, it just automatically moves all the way to the right...

How can I fix this?

My Firefox browser window has multiple tabs. I would like to be able to close them individually. The tabs do not have the 'x' symbol on them to be able to close them conventionally. I tried to right-click on the individual tabs, but the drop down menu does not have the option available to close the tab either. I tried rebooting the computer but when I open Firefox again, the same tabs are still there rather than opening up a fresh browser window with only the start tab window. I am using Windows 11 with this computer also. Help!!!

I usually keep between 15-20-30 tabs open at a time and like to keep about 5-7 at the far left. Just lately Firefox has started automatically on its own shifting my tabs that were far left all the way to the end on the far right. It is always just one at a time and then sometime later another and another.

How do I fix this?