[2020] Entrancing lyre bug?

So, i just lost a draft game where my opponent used entrancing lyre to tap one of my creatures and I destroyed the lyre in response, it tapped my creature (this is correct), however once the lyre is gone my creature should have untapped as normal but it just stayed tapped forever.

From my understanding of the rule, when the lyre is gone my creature should be able to untap as normal.

Gatherer rulings: "If Entrancing Lyre leaves the battlefield, it’s no longer tapped, so the creature is free to untap as usual."

"If Entrancing Lyre becomes untapped before its activated ability resolves, the target creature is tapped, but it can untap as usual. This is true even if Entrancing Lyre becomes tapped again before the activated ability resolves."