Self analysis feature

My question is regarding the analysis feature.  My desire is to replay my games and once finished I click a message that indicates "self analysis."  It gives me what appears to be a 3 ply analysis of the best lines.  I also have this handy feature on my phone app and like it very much.  The thing that I see that happens is that after 5 or six moves, the analysis disappears and the boxes where the analysis once appeared are all blank?

Granted this is point is a couple of months old now, but I'm getting the same problem. The self-analysis lines seem to be forever calculating.

Here's a video of how it's supposed to work (and indeed, how it used to work last time I used the site).