The x11 window class is changed with today update. From "steam" to "SDL Application"

  "window_properties": {
    "class": "SDL Application",
    "instance": "steamwebhelper",
    "title": "Steam",
    "transient_for": null,
    "window_type": "normal"
  }

Assing the StartupWMClass=SDL Application to the .desktop file is a workaround for now, but would like to know if this is a bug or something expected

July 30th steam beta did this

The problem is not exclusive to Arch since I have it on Pop!_OS as well, which is a derivative of Ubuntu and falls within the Debian family of Linux distributions.

This also happens to me on Ubuntu 22.04.4 LTS

Also on Fedora 40

It happens on EndeavourOS too.

@alosarjos It works with your workaround :clap:

Also on NixOS

Just want to note I am also seeing this on Tumbleweed Linux with Gnome Wayland after the July 30th beta update.

Also present on Ubuntu 24.04 LTS. Also seems to make the client way more unstable for some reason, seeing a lot more hang-ups

Judging by what I can see, I think the change is also the reason why Steam now shows up separately from my pinned taskbar icon on KDE:

Using Xorg, but I presume it'd do the same on Wayland.

Fixed with Aug 13 update

Can confirm it's fixed here too. The patch notes didn't mention it, though.

Same here, restarting Steam and letting it apply the patch fixed the issue.

Seems also more stable currently for now compared to when the SDL version showed up. Any out-of-focus hang-ups which increased with SDL for now don't seem to occur (anymore?), but that bit would require some further testing if that was SDL-related or something deeper within the client.

Fixed