I've recently installed 25.04 (fresh install) after using 24.04 LTS for a while. This also means I've switched from X11 to Wayland.
When I lock my computer and leave it locked for a while, it seems to auto-suspend itself, even though I disabled automatic suspension, as seen here:
When I then try to unlock my screen, just...nothing happens. The screen remains black, no display signal is sent (monitors say no source signal) and I have to press Ctrl+Alt+F3 to open a shell, signal my computer that something is going on, and then switch back via Ctrl+Alt+F1 to get a lock screen.
I highly suspect that this is Wayland-related, as the bug did not appear in 24.04 (where I used X11), but an extremely similar bug happened on Bazzite Linux, which also used Wayland.
Edit: From my preliminary testing, my suspicion that this is Wayland-related seems to be confirmed. I switched to X11 and the issue does not seem to occur there.