Roon Build 933 contains some improvements in this area. It may take some time for this build to make it into your respective country’s Google Play store, but once you have updated to 933, do let us know if the issue is fixed on your end, thanks!
I am discussing your findings with the team, and in addition to the ADB logs, can you please also record a video capture of you using the Roon app with the contrast issue and upload it to the same link and let me know? Thanks!
Thank you for the feedback here. We have made a change that we hope will help with the issue and this change is scheduled to go out in a Roon release soon.
Please note that we don’t have this device in-house to fully test the change, but since our previous fix helped with Exynos 96XX processors, we are hopeful this new fix will help with Exynos 98XX now as well.