Check this out

[DanielRacy]

Started a Skull quest and the game sent me to an arena battle with extra Eddie. Then the match got stuck on a loop (second image). Had to restart the game.

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[Leviathan]

Thanks for these screenshots!

Were you fighting in the Arena just before you decided to play this skull quest? If not, can you remember what you were doing in-game beforehand?

[DanielRacy]

Leviathan, I don't remember exactly, but probably either arena or LoL.