in the new 1.8 I let clicked and it minimized minecraft, before on 1.8 it didn't do that

Put the summary of the bug you're having here

What I expected to happen was breaking a block...:
Describe what you thought should happen here

What actually happened was minecraft minimized...:
Describe what happened here

Steps to Reproduce:
1. left click anywhere, even in the sky
2. ...
3. ...