Washed out Desktop Mode, if HDR is activated in Game Mode

[slimsha3]

Describe the bug

Hey guys! I have a LG C1 TV connected to my 6800xt via HDMI. If I enable HDR in Game Mode and switch to Desktop Mode, the image is grey and washed out (Desktop HDR set to 'off' in KDE settings). If I toggle HDR off in Game Mode, Desktop Mode is working correctly again. The same problem happens if I connect my TV via a 'Cable Matters' Displayport to HDMI adapter. Nobara 40 does not seem to have this kind of problem. Any ideas?

What did you expect to happen?

correct hdr colors on desktop

Output of rpm-ostree status

State: idle
Deployments:
● ostree-image-signed:docker://ghcr.io/ublue-os/bazzite-deck:stable
                   Digest: sha256:702c8397e1215800c5a589728ddc4e30822a07328f004dff3ead71b5960e400f
                  Version: 41.20250106.3 (2025-01-07T04:25:40Z)
          LayeredPackages: gnome-disk-utility

  ostree-image-signed:docker://ghcr.io/ublue-os/bazzite-deck:stable
                   Digest: sha256:4c144142a41b10a88f2a16425d2656fd0adccbb95a00c1dbc57cffcb2ae9d596
                  Version: 41.20250101 (2025-01-01T10:53:33Z)
          LayeredPackages: gnome-disk-utility

Hardware

7800x3d
rx6800xt
riptide b650e

Extra information or context

No response

[xXJSONDeruloXx]

seeing same thing on HTPC with 7900xt and 5700x3d.

What is desired outcome here, that KDE HDR enables when gamemode HDR enables?

[slimsha3]

When hdr is enabled on both modes it should not have washed out colours on desktop mode

seeing same thing on HTPC with 7900xt and

[slimsha3]

Falsely closed the issue

[likwidtek]

I'm having this exact same issue. Running on a PC in game mode / HTPC. Connected to an LG OLED TV as well over HDMI. I have a 6750 XT 12GB, happy to give more info if that helps.

If I disable and reenable HDR or reboot it usually fixes it.

[crashniels]

Same issue here but with a 6700S dGPU. I am connected via HDMI to my 4K TV. First time I noticed it was after the December 3rd Steam update. After reboot it was washed out. I only did it a few days ago.