just had a level up from 31 to 32 and didnt get a championcapsule. i received one upon reaching level 31 tho. so guess its a new or temporary bug.
want to add the information, that even after an relog, the champion capsule didnt show up. so its definetely a new bug of some sort.
update: today, the champion capsule appeared. if it wasnt done manually, the server seems to have issue somewhere. (as explained, i did restart my client yesterday at least twice and couldnt get my capsule for leveling up) or i dunno how else to explain such a huge delay.
nevertheless, i got my championcapsule.