Can't See Health Or Levels Of Mobs

For some reason ever since the new gavel update i can't see the level or health bars of mobs. I've asked my friends online if they ever experienced this but they seemed to never have this problem. Although when i attack the mobs for a brief moment i can see the damage taken. But in general i dont see their lvl or health, and if anyone can offer me some solutions to this issue it would be greatly appreciated :)

 

I've seen this occasionally, and sometimes I see the nametag and health of the mob several blocks away, but moving in sync with the mob. I can hit the mob, but I just have to look over to see how much health it has. I assume it has something to do with the way the armor stands are spawned in.

 

Try switching to version 1.8.9 if you haven't.