I need a solution to a problem in UEFN, please.

"When testing my map via UEFN, the ice and sliding mechanics work perfectly. However, once I publish the version and access it in the standard version of Fortnite using the island code, the ice physics and sliding stop working entirely. Here is a video showing the issue https://youtu.be/zlOttthSEA8?si=Dhi-Jp9syM-BWP1U