Interesting... Never had that issue before.

Did you try with Firefox in Troubleshoot Mode?

Try downloading Firefox from Mozilla. Download, unzip, and run firefox-bin from the folder and see if you have the same issue. https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

Do you have the same issue under a different user account

What Desktop? X11 or Wayland?

Operating System: openSUSE Tumbleweed 20240521 KDE Plasma Version: 6.0.4 KDE Frameworks Version: 6.2.0 Qt Version: 6.7.0 Kernel Version: 6.9.1-1-default (64-bit) Graphics Platform: X11 Processors: 12 × Intel® Core™ i7-9850H CPU @ 2.60GHz Memory: 125.1 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics 630 Manufacturer: HP Product Name: HP ZBook 17 G6

You can also try a usb live stick of LM or another OS (wink wink) to see if you have the same issue.

You can also try a usb live stick of LM or another OS (wink wink) to see if you have the same issue.

X11. Like I said, it happens occasionally and I don't know the conditions to reproduce it. The problem is in a soft spot in which it annoys me but not to the point of motivating me into trying out different distros just to investigate the issue. Since I can just close and reopen the browser to fix it. I just thought maybe someone knew about this and had a quick answer. As for the other distros, I am planning to hop to a new distro, but I am waiting for the release version of the new nvidia driver(555->560) to be available so I have more options (wayland), probably by the end of summer. Yes, Suse is one of my targets. It will probably be either Arch, Fedora, Suse or Debian with nixos repos. Most likely KDE.

This problem started after I disabled the new firefox telemetry from settings. Could it be related?

It should be fixed in 126.0.1 (1897115)

Having the same issue on macOS (Sonoma 14.7) on Firefox version 130.0.1

I saw this also on Windows 10, FF 132.0.2.

When I ran into the issue I found this page. After looking at 1897115 I realized that I had a long running drag-and-drop copy in the background. I was running winrar and did a drag-and-drop copy to windows explorer. The zip-file contained thousands of files so the whole operation took a long time to complete. During this time I was not able to drag tabs in Firefox. I could again drag tabs as usual when the copy was completed.