When the laptop display has the toolbar, the window snaps back to the primary display, even though the window started in the secondary display. When the toolbar is in the secondary display, maximizing the window changes it to the size of the laptop display, but keeps the window in the larger secondary display. This was working properly in 2.7.7. The desired behavior is for the window to maximize in the display in which it resides. I'm running OS X Sierra on a MacBook Pro (intel i7 2.9 GHz processor) with an external monitor attached.
Can you please bisect to figure out what version introduced the issue for you?
The problem begins with 2.7.11. I installed 2.7.10, and the green button behavior is normal.
There was literally no change between 2.7.10 and 2.7.11 in that code. The only changes were 4 small patches for very targeted issues (in fontcnonfig, libX11, and libXi) and version bumps for libpng and mesa.
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