I’m also experiencing this issue. I was using Gnome just fine about a week ago, and this suddenly cropped up. I did a format and clean install and the issue persists on a cold boot. If my system sleeps/hibernates/suspends, the login icon shows up, but that’s not a great solution.
I’m not entirely new to the Linux space, but I can’t even figure out how to troubleshoot this. I’ve tried dropping to TTY, but I get a single underscore character and nothing but CTL + ALT + DELETE can get me back to a screen.
I looked at the bug report, and I’ve got a card (NVidia 1650) that is probably affected by this.