Title: Alt+Tab and touchpad swipe fail to switch properly when returning from fullscreen game to YouTube fullscreen tab
Description:
When switching from a fullscreen game (Genshin Impact) running in borderless mode to a Brave tab playing a fullscreen YouTube video, Alt+Tab and three-finger swipe gestures require two inputs to move one window forward. This issue occurs only in fullscreen video mode on YouTube.
Key Observations:
- The issue only happens when the YouTube video is in fullscreen mode (not theater mode).
- The issue does not occur in Firefox, only in Brave/Chromium-based browsers.
- The issue disappears when the video is in theater mode.
- Explorer.exe refresh is required to remove the “mirror tab” issue after Alt+Tabbing.
The problem is observed across multiple virtual desktops (Win+Ctrl+→/←) with hundreds of YouTube tabs opened, likely contributing to the issue. GPU hardware acceleration is disabled in Brave.
System Information:
- Windows version: Windows 11
- Brave version: Version 1.78.97 Chromium: 136.0.7103.93 (Official Build) (64-bit)
- GPU Hardware Acceleration: Off (disabled)
- Game: Genshin Impact (borderless windowed mode)
Expected behavior:
- Alt+Tab or three-finger swipe should switch directly to the YouTube tab in one input.
Actual behavior:
- Requires two Alt+Tab presses or two swipe gestures to switch to the YouTube tab.
Additional Notes:
This issue appears related to Chromium’s fullscreen video handling when switching from a fullscreen game. The “mirror tab” issue where multiple tabs appear to be open even though only one is focused, requires restarting explorer.exe to resolve.