Fullscreen doesn't work on OS X

In the 14w30 snapshots, when I use F11 to make the game fullscreen, I see only a massively zoomed-in portion of a tiny part of the screen, making the game unplayable. This issue does not exist in v1.7.10.

When using the button in the upper-right corner of the window to make the game fullscreen works fine, but retains a colored title bar, making the view smaller than it could be. The issue only happens when using F11.