The minecraft window doesn't adjusts itself when dragging

What I was expected to happen was:
The window would adjust itself.

What actually happened:
The window doesnt'..

Steps to reproduce.
1-Resize to a small dimension.
2-Resize out.
You can see what it doesn't do.

Notes:

• Try to do that to the launcher and compare to the game itself. You see that the launcher adjusts itself (not fast but it does) while the game doesn't until I stop dragging.