promotion loss caused lp drop on 2nd game (1 win 1 loss no 3rd game)

so i lost a promo game, w/e it happens. but i was 1/x/x (with no 2nd game played yet). lost the 2nd match of promo's and went down to 50 lp straight from that (not even giving me my 3rd promo game, like wtf i'm 1/1) drop me down to 50 lp from a loss on the 2nd.

seems a bit buggy to me