[New Steam UI] DPI scaling no longer working

[ReillyBrogan]

Your system information

• Steam client version (build number or date): 1683078372
• Distribution (e.g. Ubuntu): Solus
• Opted into Steam client beta?: Yes
• Have you checked for system updates?: Yes
• DE: Plasma (Wayland) 5.27.4
• xwayland version: 22.1.9

Please describe your issue in as much detail as possible:

After switching to the latest Steam beta I observed that window scaling is no longer working. My display is set to 200% scaling and the client was correctly scaled prior to switching to the beta. Steam is now ignoring the scaling setting resulting in a window that is too small to be usable on my display.

Steps for reproducing this issue:

1. Set window scaling to 200% on Plasma Wayland (untested in x11 session)
2. Switch to Steam beta
3. Open Steam client and observe that scaling settings are ignored.

Note that this is a regression as it worked previously and switching back to the non-beta channel causes Steam to start scaling correctly again.

Thread on the Steam forums with other users experiencing this issue (not sure why Lionking says it was working before): https://steamcommunity.com/groups/SteamClientBeta/discussions/3/3826413850821502932/

[kisak-valve]

Hello @ReillyBrogan, this issue is already being tracked at #9209. Closing as a duplicate.

[lionking102]

So the reason I was saying it never worked is simple: I fogot to write that I use fractional scaling, I'm at 150%.
Integer Scaling (1x, 2x) maybe worked and was sharp before, but fractional scaling never worked good. There is only the option to not scale steam or to have a blurry UI. With KDE's "Apps scale by themself" (which is the only great experience for linux scaling right now) it is not even possible to have a blurry UI, people streight up can't read it and can do nothing about it, because steam doesn't support fractional scaling.

[andyczerwonka]

I have a similar problem, in that when I use fractional scaling, for many games the I get the game rendering in the bottom left corner of the screen and the rest of the monitor is black.