What I expected to happen:
The minecraft window to resize
What actually happened:
The window resized but minecraft itself stayed at the same resolution.
Steps to Reproduce:
1. Go to worlds menu
2. Load any world
3. When 'Loading World' appears click Maximize button
To fix:
Just resize the window when the world loads.
Duplicate of MC-13661, please use the search function to see if your bug has already been submitted. Currently over 55% of tickets are being closed as duplicate.