Same problem. My opponent committed suicide by drawing while I had Sheoldred on the board. When I reached 0 life points, the game announced a draw instead of a victory.

i pushed "capture log" but didn't see where it saved it on android version. It said draw as I won I got the daily win prize but no rank progress

Just after opponent declared no blockers (would-be lethal attack), I sent a Lightning Strike at opponent and "Draw" flashed on the screen and I didn't get a win.

Same issue here, a lethal attack resulted in the match ending in a draw when my opponent took lethal combat damage with nothing that would cause a loss on my end. The only weirdness during that game's end gameplay wise is that a blocking Phyrexian Obliterator of my opponent's took damage at the same time as they took lethal from other unblocked creatures.