Yay. It's fixed for my NVIDIA computer, too. All of the bizarre scaling issues and other nonsense is fixed.

Praise Gaben

Does that mean Steam will start again?

Just did a new Mint install yesterday and spent ages trying to figure out why steam was going bananas! Much joy.

Still issues with hidpi screen. I still have to manually add a variable to scale correctly

For some reason i still have bad mouse lag on x11 but it could be nvidia or my driver for all i know.

Does it fix the crash of Source games when opening the in-game overlay? Did anyone test this?

Was pretty much unusable before. Works great now. Thanks gaben

It didn't fix my problem yet.

Has anyone else seen the issue where clicking on the menus at the top of the window will open the menu on another monitor?

I will have to give it a try.
Ubuntu 23.04, Nvidia 3080, xorg. I would use Wayland but it doesn't work with steam at all for me at the moment. Maybe this update fixed it.