Failure in certain Drag and Drop to the tree container

[John Small]

When I try to drag a file from within a directory container to a directory icon in the tree container it fails... if the target directory is the first child of its parent directory. The failure is that the "Don't drop on me" icon is displayed (even before I release the mouse button).

Other drag and drop operations seem to work properly.

If I create a new directory, making it the first child of the parent of the desired target, then the drop to the desired target (now the second child) works properly.

I will try to figure this out on my own. However, since I am not very experienced in PM programming, I will not assign it to myself (in hopes that someone more knowledgeable will look at it).