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Lichess puzzle 80478

i can't tell if it is because of the fact that this is a new puzzle that has only been played 34 times and not tested very well or the analysis isn't deep enough. but the puzzle started with an equal evaluation (-0.3). meaning no matter what you do you can't gain any advantage (the whole point of puzzles).
then 3 moves in the computer blunders; instead of going with Stockfish suggestion; F4, he went Rfe1. and the evaluation shifted to -3.
sure i failed the puzzle even before move 3, but i still feel kinda cheated since i wasted 45 min looking for an non existent tactic.
You are right, after f4 instead of Rfe1 lichess Stockfish 8 says -0.2 at depth 25. I think the puzzle wasn't evaluated enough long when it was constructed.

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