# Steam Client beta fixes Linux Vulkan alt-tab hangs and NVENC memory leak

> **Key takeaway:** The October 21st Steam Client beta update resolves a Vulkan game hang after alt-tab on Linux and fixes an NVENC memory leak during Remote Play streaming.

**Published:** 2026-10-21T22:10:25+00:00 
**Source:** Steam Client Beta & System Updates 
**Category:** open-gaming 
**Canonical URL:** https://fosswire.org/news/steam-client-beta-fixes-linux-vulkan-alt-tab-hangs-and-nvenc.html 

## Summary
Valve released a Steam Client beta update with targeted fixes across platforms. For Linux users, it resolves Vulkan games hanging after alt-tab and fixes a case where the Steam updater UI failed to appear. The update also patches an NVENC memory leak affecting Remote Play H.264 streaming from Windows hosts with unlimited bandwidth, plus general fixes for erroneous service error dialogs and date display issues in British Columbia.

## What this update fixes
- **Linux**: Vulkan games no longer hang after alt-tab switching
- **Linux**: Steam updater UI now displays correctly for affected users
- **Remote Play**: NVENC H.264 streaming memory leak fixed on Windows with unlimited bandwidth setting
- **General**: Erroneous Steam Service Error dialog on quick quit/restart resolved
- **General**: Certificate revocation lists updated
- **macOS**: Browser window crash fixed

## Why it matters
The Vulkan alt-tab fix addresses a longstanding pain point for Linux gamers, while the NVENC patch improves stability for users streaming games via Remote Play from Windows systems.