After updating again to .38, I managed to reproduce the bug, and made the video, also the points to polygons tool has visibility issues.
After reinstalling .38, the bugs where gone. I then reinstalled .37 and the bugs appeared there too.
I attached a pic and the .37 log with the bugs.
I now updated to .39 and the bugs are yet again gone.
Seems like a clean install of 3DC can resolve this bug.
Hope this information helps.
3DC retopo bugs.mp4
Log.txt