** Description changed:
[ Impact ]
After upgrading to Ubuntu 26.04 (current development branch), some Snaps
have lost core UI functionality. The menu bars (File, Edit, Tools, etc.)
are non-functional, and mouse-driven interactions like "Copy/Paste" via
context menus are failing.
The issue is consistently reproducible with the Slack and Steam snaps.
This seems to only affect snaps that use X11 through Xwayland, but it
could, in theory, have larger unknown side-effects.
[ Test Plan ]
Install Ubuntu 26.04.
- Install Slack or Steam via Snap: sudo snap install slack.
+ Install Steam via Snap: sudo snap install steam.
Launch the application.
- Attempt to click on any item in the top menu bar (e.g., "File").
+ Attempt to click on any item in the top menu bar (e.g., "Help").
-> Verify that a popup menu appears
Verify that you're able to right-click and copy/paste text within the app.
[ Where problems could occur ]
The patch modifies logic relevant to associating a window with a snap
application. In case of issues, windows would display the wrong icon in
the desktop dock and overview.
[ Other info ]
https://forum.snapcraft.io/t/broken-menu-bars-and-clipboard-interaction-
in-multiple-snaps-slack-steam-on-ubuntu-26-04/51168
** Changed in: mutter (Ubuntu Stonking)
Status: In Progress => Fix Committed
** Changed in: mutter (Ubuntu Resolute)
Status: Confirmed => In Progress
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https://bugs.launchpad.net/bugs/2147501
Title:
Broken popup menus and clipboard interaction in multiple Snaps on
Ubuntu 26.04
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