Task list goes blank randomly

I have not figured out what causes this but quite often my Task list will go blank.  See images below.  If I open and close Microstation it always comes back. (see next image).  This happens in multiple files, multiple locations.  Something seems to cause it to blank out. 

Also, is there any way to keep the tasks expanded between design sessions.  Every time I open Microstation it opens collapsed.

On opening Microstation:         As Microstation was closed.

            

Task list is empty:

Task list is correct on freshly opened Micrsation:

             

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