Have you noticed that many of the posts are not showing the correct thumbnail either, but the users avatar in this space instead?
Since some are, my theory is that posts published directly through the VYB frontend have the thumbnail determined by the author, but those added through tagging the community on another frontend do not.
This is only happening on the posts when viewed through the VYB frontend, but not when viewed through another.
Is this part of the design?
RE: UPDATE: Problem fixed || We are investigating the glitch that seems to have zeroed out 2-days worth of VYB rewards