Yes I just tested it aswell and it's pretty weird, I played Villers Bocage on hslan an hour ago and shot the tiger from behind: it didn't even start smoking and just drove away. But I tried the same setup in a local server just now and it díd die in two shots.
Sorry for the false headsup then... I guess I was just very unlucky those rounds.
Still weird that it did give the red hitindicator though, so it wasn't just bad hitreg.