I was working at "School Mayhem 2" and saw in the "Pickups" folder cool items like grenade a twirlgun. So I tried to use them and published the game. It was all looking fine but when I tried the game in the browser (Firefox Quantum), I picked up the grenade launcher and when I pressed X nothing happened. I think it's kind of weird bug because the weapon works fine in the editor. Thinking it was just an issue of the grenade launcher I removed it and added the twirlgun. This weapon also worked in the editor but not in the web browser. I don't know what to do. I hope @zep fixes this issue.

P.S.: sorry for eventual bad English

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