A new stable Steam Client was released on 27.07.2026 for both the Linux desktop and the Steam Deck.
Fixes include a broken login dialog when the client is started with -silent, local game transfers that stopped working, and a bug with Proton games using mixed case paths that caused Disk Write Errors during install or update.
Steam Client Update - July 27th
General Fixed login dialog showing when Steam client is started with -silent.
Downloads Fixed local game transfers no longer working.
Linux Fixed Proton games with mixed case paths failing to install or update with Disk Write Errors.
On the Steam Deck, the same update landed on the stable channel - the login dialog fix appears there under “Desktop Mode” and the transfer fix under “Downloads”.

Source: Steam (Desktop), Steam (Deck)