Public bug reported:
On the hirsute Pi desktop, under a wayland session with the "full" KMS
overlay enabled, and "kms-modifiers" present in the org.gnome.mutter
/experimental-features, the body of a window containing an HTML renderer
(e.g. help text or a login page) displays corruption.
These reproduction cases may not be entirely reliable given that *some*
pages appear to render correctly, but I'll include a couple in the hopes
of making it reliably reproducible:
1. Open the Lights Off game
2. Select "Help" from the menu
3. In the help window that appears, select any link
"Basics", "Rules", and "Strategy" all reliably reproduce the issue for
me, but "Help Translate" doesn't so you may need to click around some
links until the corruption appears -- however, once it does even
navigating back to the prior page which rendered happily now displays
the same corruption.
Another reproduction case:
1. Open the Settings application
2. Select the Online Applications option from the left
3. Select the Google entry in the list
4. The login window that appears always displays corruption for me
The Microsoft option always reliably corrupts for me, but the Facebook
one doesn't so again I wonder how reproducible this may be for others
(might be worth trying several options if the first doesn't display
corruption).
The corruption appears in the form of "shredded" content as if a
horizontal stride is set incorrectly somewhere, but only appears in the
body of the window; the window decorations are unaffected. I'll attach a
screenshot of the corrupted help window to illustrate.
** Affects: mutter (Ubuntu)
Importance: Undecided
Assignee: Daniel van Vugt (vanvugt)
Status: New
** Tags: hirsute raspi raspi-gfx
** Attachment added: "Screenshot from 2021-04-15 10-07-46.png"
https://bugs.launchpad.net/bugs/1924251/+attachment/5488263/+files/Screenshot%20from%202021-04-15%2010-07-46.png
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https://bugs.launchpad.net/bugs/1924251
Title:
Embedded browser display corruption under Wayland on Pi desktop
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