I've experienced no problems with my LH intra -geramn flights the last weeks on UA statement. But you have always to be aware, that computer programms don't work well. Otherwise I'm still missing a bonus for bus on my last recent flight ORD - DUS on UA.
So always keep all the papers, check the account and throw 'em away once they are credited. Don't trust "automatically" because we all know, a computer or some software is nothing to rely on.