For me, the latest steamVR update breaks particularly standby mode, steamVR crashes upon standby mode being entered on in this case, Pico 4 Pro.
And feeds the error:
[Error] - VendorSpecificEvent 111 outside of reserved range
[Info] - alvr_server: Unhandled exception: C0000005
Temporary work around: Downgrading to previous SteamVR release through "beta branches".
Is this an issue on later ALVR releases?