The Steam Client Beta has been updated with the following changes:
General
Fixed misc. regressions in the screenshot manager
Added support for saving uncompressed HDR screenshots as AVIF
Fixed wide game images sometimes failing to load
Fix custom logo positions sometimes not applying on app details pages
Big Picture Mode
Fixed transparency and blur on header and play bar
Fixed graph height on downloads page
In-Game
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Corrected Steam overlay colors when games have HDR enabled
Source: https://store.steampowered.com/news/gro ... 5991601909