I'm not sure if this has been an issue with mine since the update or not. When I have grid enabled, and I also made sure unit name was enabled for center text, it doesn't display anything at all. With my grid, all I see are squares representing the persons' class. The only text I see is when someone get's hit, and it drops and shows the % of which they have left I believe.
I've tinkered with making sure the name was enabled in various places, including center text and center icon, still not getting anything.
Check all the priorities of statuses assigned to the text indicator, in particular health deficit and its threshold (don't use a value of 100 there). Also make sure color alpha is fine and the status is enabled. If all that dose not help start turning off the assigned statuses except unit name one by one so you can pinpoint the problem.