1.0.3 - Drag and drop files periodically stops working

I noticed that dragging and dropping files somtimes just stops working (the mouse pointer becomes a “circle with a slash through it”). I am unable to drag and drop files into Scrivener (from desktop to Scrivener), and I am unable to drag and drop files within Scrivener (from one folder in Scrivener to another folder in Scrivener). I am able to use the “Move” command from the right-click menu to move a file or folder from within Scrivener when Scrivener gets this way.

I need to close out Scrivener and then start it up again to be able to drag and drop files again.

I am not able to reproduce this problem at will, other than my observation that it happens after Scrivener has been open for “a while.”