[working as specified] drawing rules are not FIDE
To remind the rules are below
These are the Fide rules: Except where one of the Articles: 5.1.a, 5.1.b, 5.2.a, 5.2.b, 5.2.c applies, if a player does not complete the prescribed number of moves in the allotted time, the game is lost by the player. However, the game is drawn, if the position is such that the opponent cannot checkmate the player’s king by any possible series of legal moves.
These are the drawing rules according chesscube
The ChessCube server will immediately end a game in a draw if any of the following positions occur:
King vs King
King + Knight vs King,
King + Bishop vs King
King + Knight vs King + Knight
King + Bishop vs King + Bishop
King + Knight vs King + Bishop
If your opponent's time expires, and you have one of the following combination of pieces left, the game is also drawn:
King
King + Knight
King + Bishop