From what I notice, the XP from the last hand is not given, only the total bonus for clearing all hands. - needed 1984 xp to next level - played last 2 hands with 4 cards, won both - that's 460 xp each - on the last hand I received 5200 xp for clearing the round now I have 3684 XP in the next level 5200 - 3684 = 1516 1984 - 1516 = 468 (that's only 8xp extra) Bottom line is that I did not receive the 460 xp from the second hand, I only received 8 XP for it! (even though the hand gives 46 xp with 1 chip, not 8 and I played 4 chips) I'm pretty sire that the 8 xp was actually from help I got from a quest. Which means I'm missing 460 xp!
If you go into the challenge you can look at the feed activity to see the amount of exp that was awarded for the challenge. You can also count the number of single hit payouts to ensure that you did receive all 24 payouts. You should have received the last payout and the Clearing Bonus.
I only received the clearing bonus. Perhaps the fact that I cleared the round with 4 chips on the last hand has something to do with it. I should have got 460 + 5200 xp. I will test this again when I finish this round (16 hands remaining out of 42), I'll post the results in 24 hours - with screenshots.
Did not occur now, but unlike the first time - this time I did not level up in the progress. Hopefully that is the condition which caused the issue and it will occur again following the same steps. I will try to reproduce the issue in the same manner as the first time (leveling up from the clear bonus) and will post then.