Issue with Nautilus after upgrading to 16.04

Hi everyone, I have begun to have an issue with Nautilus after upgrading to 16.04. If I use Nautilus to access my exteal hard drive, maximise another window, and try to retu to Nautilus by clicking on its icon, the little flag thing that indicates that there is an instance of a program ruing will disappear and it will open another Nautilus window instead of retuing to the original window. This only occurs if I am accessing files on my exteal hard drive, if I access files on the inteal hard drive, this does not occur.

Is there a way of fixing this?