Morgana double Zhonya conspiracy (bug[?])

Description: Well,I was playing an Aram match and during the match the enemy team's Morgana was able to use Zhonya twice in a few seconds,but I'm not sure if is it a bug or not. Title: 8.7. Server: EUNE. Match Details: Type of Bug: In-game. Details: I wrote it already above and I don't know how to recreat it.
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