King and Knight verses King and Two Pawns

I just played the following game - en.lichess.org/5rkvaIvf/black as black and won on time even though I only had a king and knight. I thought that this should be a draw with insufficient material? I did promote to a pawn to a queen near the end of this bullet game?

Is this a bug or am I missing something?

This is not insufficient material.

en.lichess.org/analysis/K1k5/P1n5/8/8/8/8/8/8_w_-_-

(edit, wrong position)

The rules on lichess changed recently: the game is now only called a draw if there is no legal sequence of moves where the side whose opponent's time ran out has mate. If your opponent hadn't had those pawns anymore, it would've been a draw.