From: https://www.reddit.com/r/firefox/comments/xwv91x/firefox_breaks_when_dragging_tabs_at_the_same/

Sometimes when I switch my current tab to a different tab and I accidentally drag the tab on the bar at the same time, Firefox locks up and begins rendering a gray screen. I am still able to change the open tab, because the uppermost bar will display the correct page name, but I can only resume using Firefox by restarting Firefox all together, or pressing alt+F2 and inputting "r". This normally makes Firefox return to normal, but sometimes I am left being not able to click on the URL bar area at all, including my pinned addons, and cannot close the current tab I am in, only tabs I am not viewing. Minimizing and re-maximizing the open window allows me to resume viewing the page I have opened, but once I swap tabs it returns to a gray page.

mozregression shows:

20:19.85 INFO: Last good revision: 78a0b6b0e8420c82792c9911d24696f2ec5b74ea
20:19.85 INFO: First bad revision: 9648a34ca72f2cf7dc1115b2b8f957e58280bf26
20:19.85 INFO: Pushlog:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=78a0b6b0e8420c82792c9911d24696f2ec5b74ea&tochange=9648a34ca72f2cf7dc1115b2b8f957e58280bf26

Set release status flags based on info from the regressing bug 1782049

:stransky, since you are the author of the regressor, bug 1782049, could you take a look? Also, could you set the severity field?

For more information, please visit auto_nag documentation.

Can you please create a screencast of it?
https://fedoraproject.org/wiki/How_to_debug_Firefox_problems#Collect_information_for_a_bug_report
Thanks.

I tried to reproduce but without luck. Would be great to see a screencast of it so I can try to reproduce it.
Thanks.

Martin, the user responded with a screencast. See attached.

You can see the page actually open when the issue occurs is Wikipedia, despite Google being rendered.

Looks like we fail to quit D&D operation.

Raising priority to match the dupe bug 1802229.

I still encounter this issue with firefox 112.0 right now.

Is a fix or workaround available ?

(In reply to dav87legrand from comment #11)
Which desktop environment and Linux distribution are you using?

(In reply to Darkspirit from comment #12)

(In reply to dav87legrand from comment #11)
Which desktop environment and Linux distribution are you using?

Up to date Manjaro with Gnome 43.4.

Just figured out that if I disable tab drag images by setting "nglayout.enable_drag_images" to False it appears to fix the issue for me.

(In reply to Jessica from comment #15)

Just figured out that if I disable tab drag images by setting "nglayout.enable_drag_images" to False it appears to fix the issue for me.

Yes, it fix the issue for me too. Thanks.

(In reply to Jessica from comment #15)

Just figured out that if I disable tab drag images by setting "nglayout.enable_drag_images" to False it appears to fix the issue for me.

+1