Update: Mozilla will release a new version of Firefox v184.108.40.206 with the fix for this bug today...
Firefox seems to auto-update these days and asks the user to restart firefox for installing the update. Hence, I'm expecting quite a few number of users who have got the bug in firefox. Google Maps is one website that seemed to use the method as well, but I guess they have found a nice workaround the bug.
The bug can be reproduced by going to the site: http://www.foxsaver.com/public/published.