Reach maximum training level in Battle Royale Bugged

The last Battle Royale initiation challenge is titled "Reach maximum training level in Battle Royale".   It is bugged and impossible to complete.   When playing Battle Royale, one will reach level 4 (max level), but then it immediately drops down to level 3 and there is no tracking towards the challenge.   There are reports that this has been happening for weeks.   Please fix.