Created attachment 1942840 [details] reproducer Description of problem: In certain background there is an black frame around clock and user and also over the Red Hat logo at the bottom left of the screen. It does not show at first but when Escaping over and over again it shows and can disappear when System menu is focused. Version-Release number of selected component (if applicable): gnome-shell-extension-background-logo-40.0~rc-4.el9.noarch gnome-shell-40.10-8.el9.x86_64 gnome-shell-40.10-9.el9.x86_64 gdm-40.1-21.el9.x86_64 How reproducible: 100% Steps to Reproduce: 1. Have the very first Red Hat background set from gnome-control-center 2. Lock the screen. 3. Press Escape key a few times to show the black frame. Actual results: Black frame around the clock, user and around Red Hat logo. Expected results: No black frame. Additional info: This happens only with the very first background from gnome-control-center the others are fine. The Red Hat logo does not exactly have a black frame but in higher brightness I can see smudged rectangle in place where the logo is located. It seems like the issue can be with logos or backgrounds itself instead of gdm or gnome-shell but I filed it under gdm just in case. Switch as needed please.
(In reply to Michal Odehnal from comment #0) > at the bottom left of the screen Bottom right.
i'm guessing it's a gnome-shell bug of some sort with blurring