Comment 17 for bug 1964541

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:98.0) Gecko/20100101 Firefox/98.0

Steps to reproduce:

Fresh installed Ubuntu 22.04 (still development version) with Firefox snap version 98.0.1
(Also tried version 99 and 100 available on https://snapcraft.io/firefox same behavior).

1. Right click on toolbar
2. Select "Customise Toolbar"
3. Tried to remove items from the toolbar and add items on it via "drag and drop".

Actual results:

Nothing happens. It looks like drag and drop doesn't work.
While trying to move items, they simply disappear.
You can see a short video: https://www.youtube.com/watch?v=vsnr8O5EgFk

(Also tried to run Firefox from the terminal, but I didn't receive any warning while trying to customize the toolbar).

Expected results:

What should have happened is that every items should be moved between the toolbar and the list of items as shown in the official documentation:
https://support.mozilla.org/en-US/kb/customize-firefox-controls-buttons-and-toolbars