Your system information

• Steam client version (build number or date): 1773983034
• Distribution (e.g. Ubuntu): Arch Linux
• Opted into Steam client beta?: Yes
• Have you checked for system updates?: [Yes
• Steam Logs: steam-logs.tar.gz
• GPU: AMD

Please describe your issue in as much detail as possible:

When using the SteamRT3 client, my 2 bcachefs libraries aren't showing up/aren't getting mounted
Disabling the SteamRT3 client makes them show up again

Looking at logs there doesn't appear to be any relevant error logged

the only (somewhat uninformative) logs are these 2 in content_log.txt

[2026-03-20 13:15:35] Install folder /big_ssd/SteamLibrary not mounted.
[2026-03-20 13:15:35] Install folder /old_ssd/SteamLibrary not mounted.