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Puzzle 29611 returns failure for equally valid alternate solution

lichess.org/training/29611

The given solution has a forced mate on 6th move. My solution produces forced mate on 6th move, however it fails. My solution is no better than the given solution, and likewise the given solution is no better than my solution as both solutions are equally valid. At worst I should have been warned that there is a "better move" instead of failing the challenge of the puzzle. Please include my alternate solution to this puzzle.

My Solution:
Qh6+ Kh8
Qf6+ Kg8
Nh5 Qxd2+
Rxd2 Bf1+
Kf2 b4
Qg7#
Stockfish confirms both 2.Nh5 and 2.Qf6+ is equally a mate in 5.
Ugh so many puzzles have this problem, it's brought up so much that we nees further use of the "good move but you can do better" option but nothing is done. These puzzles that Stockfish creates from games NEED human intervention and check up before release to the trainer, without a doubt. At least that's what I would suggest.

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