Empty track thumbnails

Bugs? Locus 4.4 seems to have a bug with the "Guidance" function for tracks. If I choose 'distance to next waypoint' as a display option it shows incorrect distance, it seems to show distance to the last waypoint. This is the same for the compass. This works flawlessly in version 3.5.

I also notice in 'My Tracks', half of them do not display the thumbnail correctly. In 3.5 all I have to do to display the thumbnail correctly is open the track, and it updates the thumbnail. This doesn't work in version 4.4 for half of my tracks. Still no thumbnail