Incorrect draw reason

In this game:



the game stopped automatically with the reason given as 'Draw claimed. Insufficient material'. That's wrong for two reasons: I (Black) didn't claim a draw, and there is still sufficient material. The position is a theoretical draw (KBP vs. K, with h-pawn and white-squared bishop), which I'd played for, but I'm not sure that declaring it drawn for any reason is appropriate.

White claimed a draw. You didn't have sufficient material so it was automatically accepted.

Your best result would be a draw, so basically you win.

White may have claimed a draw, but 'Insufficient material' is incorrect. I'm not complaining about the result!

@BlackberryA It is correct. Since you only have a King, you cannot checkmate White, that is what is meant with insufficient material in this case.