Minecraft opens in small window after clicking "Play"
When we open the Minecraft launcher it starts normally but when we click "play" it opens in a tiny window. This has been a persistent issue despite updates to the Java version.
Most of the time we can just maximize but sometimes it glitches and we have to restart.
Environment
Surface, Windows 10, Java Version 1.16.4 and all earlier versions
Created Issue:
Minecraft opens in small window after clicking "Play"
When we open the Minecraft launcher it starts normally but when we click "play" it opens in a tiny window. This has been a persistent issue despite updates to the Java version.
Most of the time we can just maximize but sometimes it glitches and we have to restart.
Environment
Surface, Windows 10, Java Version 1.16.4 and all earlier versions


What's the "resolution" set to in the launcher -> Installations -> (Your installation) -> Edit?
You set the fullscreen setting in-game:
Minecraft: Java Edition > Options > Video Settings > Fullscreen: ON
Did this solve your problem?