I having same issue

To add, this also happens when you click on links in other pages. Maybe it got something to do with, that each time you switch to another app and then go back to FF, FF opens a new blank tab in the foreground which is extremely annoying.

Hi there, It appears that you are being impacted by a new bug. Contributors and staff are currently working on it, and a fix should be delivered in the next version of Firefox for iOS (124.1), a release planned for later this week.

If this issue persists after the update, please do let me know. I apologise for any inconvenience this may have caused.

Thanks for your understanding!