Went from 0lp(-3lp) to 18 LP after geting +21 lp from a ranked match

Had a bug where i had -3 LP in ranked score, then won a game and went from -3 to 18 after winning a ranked game and receiving 21lp for the win. However according to friends my profile indicated i had 0lb not -3 but on my profile i had -3 on my screen. (had friends check this to see if this was universal but was just for me) Not a huge deal its 3lp but might be a bigger bug. Not sure what to do about this.

Kampfers