After suspend, on resume, Ubuntu briefly shows content of session before displaying the lock screen [closed]

This happens to me about 10% of the times when I resume my laptop from suspend mode. I feel that this is problematic for privacy because someone physically near my laptop could briefly see what is in the session without knowing the password.

I'm available to give you more info if needed. I haven't found info on this bug, though.

My config:

Ubuntu 21.04 (installed fresh three months ago, but I don't think it is specific to this release), using GNOME, on Xorg, on a ThinkPad X1 8th gen (released mid-2020). I use to slow down my CPU to max 1.6 GHz most of the time when I am on battery, but this should be irrelevant.

This bug persists through two installs.

This is a highly visible bug to the developers. If you do determine more information relevant to repeating this bug, please share.

Same as: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1532508

Very Similar: https://bugs.launchpad.net/ubuntu/+source/unity-settings-daemon/+bug/1335835

Very Similar: https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/1520882

Similar: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/960073

See also: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3294