The Steam Client Beta has been updated with the following changes:
General
Fixed some context menus opening incorrectly when the opening window is maximized.
Fixed in-client link to support FAQ detailing Windows 7/8/8.1 end-of-life.
Fixed login refresh dialog not showing in overlay when a game is launched by a second Steam session while a game is running
Big Picture Mode
Fixed showing notifications in the Big Picture Mode game overlay
Linux
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Fix client crash due to usage of AVX instruction set
Source: https://store.steampowered.com/news/gro ... 8680613795