Hi, Thanks for reporting. I filed a bug report [https://github.com/mozilla-mobile/firefox-ios/issues/27812 here], in case you want to follow the progress.

Hi there, After investigating this a bit more, we realized that this is expected as part of the new tab tray experience we release starting from version [https://www.mozilla.org/firefox/ios/140.0/releasenotes/ 140.0]. That said, it's important to note that even though you can't rearrange tabs like it used to be, the team is currently exploring an altertive method to rearrange tabs with the new tab tray experience. If you want to leave feedback for the developers about this new change, please go to our feedback platform, [https://connect.mozilla.org/ Mozilla Connect].