I'm running Debian 12 (bookworm), using GNOME 43.9 under Wayland. I installed Firefox 122.0.1 from the Mozilla binaries as described on the Debian Wiki [1].
Drag-and-drop actions with Firefox seem to be broken under Wayland. For example, when I switch to Xorg, I can drag-and-drop links from Chromium to Firefox in order to open them in Firefox, and I can select multiple Firefox tabs (with Shift+click) and then drag them away from the tab bar in order to move them to a new window. These actions do nothing under Wayland. Since I've installed Firefox directly from Mozilla, I can't justify reporting this as a Debian bug. However, I'm curious if anyone running Debian sid (unstable) can reproduce this bug with the `firefox` package installed via the Debian APT repos. I've already reported this bug via Bugzilla [2]. If anyone can reproduce this issue with Firefox 122 under Wayland on any version of Debian, and you'd like to see it fixed, please add a comment on the Bugzilla issue (linked below) so that we can get this issue more visibility. Or, please let me know if there's some post-install configuration I need to do in order to fix drag-and-drop for Firefox 122 on Debian 12 under Wayland. [1] https://wiki.debian.org/Firefox#From_Mozilla_binaries [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1878811