This issue is still existing after the fresh installation on raspberry pi 4 8GB desktop.
** Attachment added: "Screenshot from 2022-05-25 00-06-30.png" https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1924251/+attachment/5593004/+files/Screenshot%20from%202022-05-25%2000-06-30.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to webkit2gtk in Ubuntu. https://bugs.launchpad.net/bugs/1924251 Title: Embedded browser display corruption under Wayland on Pi desktop Status in gtk+3.0 package in Ubuntu: Confirmed Status in webkit2gtk package in Ubuntu: Confirmed Status in yelp package in Ubuntu: Confirmed Bug description: 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1924251/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp