Auto-resize Guest Display not working

[ranamala]

Host: Mac OS 10.10.5 Macbook Pro retina 15 inch with an external auria EQ276W 27" monitor Guest: Debian Jessie Guest using two displays

I have auto-resize guest display enabled

In full screen mode with the primary screen on the Auria and the secondary screen on the macbook it works fine with both. If you unplug the DP while in full screen mode it still work fine. However if you exit full screen mode with the two screens on the macbook (external monitor still unplugged), the window for the primary display has a scroll bar on the right and bottom (ei it doesn't resize). Also if you go back into full screen mode the primary screen no longer fits on the macbook.

Let me know if you need any additional information.