We don't have any other unresolved reports of issues with the newer version. I have a feeling this issue may be related to the database being used in a multisite environment.. nothing else has changed since the last version that would cause something like this. As far as the stars showing or not, that code has not been touched in the last 10 updates or so.
There could be a couple of things going on with this, but the stars not displaying would be a theme or CSS issue. The reviews not showing up in admin may be related to it trying to use 2 different database tables.. I will do some checking. Unfortunately, I don't have a working multisite environment to test it on, so I will have to get that setup soon.