Game hangs/freezes upon Alt-Tabbing

Summary:

The game enters a "hard freeze" state when Alt-Tabbing out of the window. This occurs both during the world-loading sequence and while actively playing within a world

Steps to reproduce:

1. Launch Minecraft Java Edition.

2. Begin loading a world or enter an existing one.

3. Perform an Alt+Tab command to switch to a different window.

4. Result: The game window freezes indefinitely and becomes unresponsive.