Valve fixes SteamVR streaming menu bugs introduced in its recent beta update
Valve has released a SteamVR beta update to address menu and overlay problems introduced by its previous streaming-focused release. Version 2.19.2 also targets crashes and visual artefacts that could appear when the streaming resolution changes.
The fixes are in the SteamVR beta, not necessarily the stable version installed by every PC VR player. Anyone can opt into the beta through Steam, but it remains a test release.
Steam Link gets fixes for menus and interrupted streams
Valve says the 2.19.2 notes address several overlay and in-game menu regressions from version 2.19.1. That earlier beta changed streaming defaults and aimed to improve image quality.

Valve shared this comparison with the earlier 2.19.1 streaming update. Image: Valve
The new build also fixes an occasional crash and temporary visual artefacts when streaming resolution changes. Valve says it has improved resilience to brief network-related stream interruptions and restored the option to reduce encoding resolution to 512.
Encoding resolution concerns the video sent over the network; it is not identical to the resolution at which the PC renders a game. A lower setting can be useful when testing a connection, although the result will depend on the hardware and network.

Valve shared this comparison with the earlier 2.19.1 streaming update. Image: Valve
Linux and some third-party controller users get fixes
On Linux, Valve has fixed launch problems affecting users of the SteamRT3 client when the legacy Steam Runtime was missing from the default Steam library.
The Quick Access Menu's battery tab should also stop reporting the right controller twice with some third-party drivers, including the PS VR2 example named by Valve.
Players who want to try the update can use the SteamVR beta instructions. Valve asks users encountering bugs to post in its bug-report forum and include a system report when possible.