Marvelous Designer Support

After installing 5.1.463 I notice that sometimes my "Property Editor" doesn't display any properties when selecting cloth.  A quick save, close, and reload fixes the issue for a time, but it seems to come back after a bit of editing.  Is this a known bug?  Easy fix?  Or am I doomed to restart my MD every time I lose my properties panel?

Here it is working like it should...

Then when I select another cloth

It vanishes.

Any thoughts, or should I open a bug ticket?