Minecraft 26.3 Pre-Release 1 restores exclusive fullscreen on macOS

What happened

Mojang published 26.3 Pre-Release 1 on September 1.

The post says the pre-release phase mainly targets bug fixes and final touches.

The practical change: Use a separate launcher installation, back up the world, and compare pack compatibility with the later Pre-Release 2 before continuing a test.

What is confirmed

• Exclusive fullscreen has been restored on macOS.
• A setting controls Menu Bar and Dock visibility in that mode.
• The data pack version is 119.0 and resource pack version is 97.1.
• Number provider registries are split into integer and float providers.

What this means for players

Mac players regain an exclusive fullscreen path with explicit system-interface behavior.

Pack authors need to check the new version and registry changes before assuming compatibility.

What is still unconfirmed

A pre-release does not guarantee that every change will ship unchanged in the final 26.3 release.

What to do next

1. 01
   Back up worlds before opening them in the pre-release.
2. 02
   Pack authors should verify 119.0 and 97.1 compatibility.
3. 03
   Report reproducible bugs through Mojang's official tracker.

Official source and image record