Resizing the window during logging into a server breaks graphics

The procedure below breaks Minecraft graphics (see attached) after logging into a server.

Reproduce procedure:

• Configure two monitors mirrored on OS X Yosemite.
• Launch Minecraft.
• Select Multiplayer, choose server and press "Join Server" button
• Minecraft shows "Logging in..." message.
• Drag, resize and release the edge of the window by mouse, while "Logging in..." message is on.
• The view is broken.

Expected Result:

• Have a proper graphics drawn after logging in.

Additional Comments:

• This issue didn't happened in w/o any external monitors as far as I tried.
• It doesn't happen if logged into a server before releasing the edge. It happens only if resizing is done before starting the game.