I was using a Slide effect material on meshes and that is the same, it has happened before and took a long time to get fixed so hoping this time people don’t have to wait as long.
I have the same issue. The Chiller Trap effect appears, but the player does not slide in playtest. In UEFN it seems to work normally, but in the test version the sliding does not happen.
My map is suffering from this same issue. It utilizes the grind powerup coupled with a movement modulator that applies impulse. A few months ago this would result in the player being pushed forward and sliding. Now it’s almost like the player has increased friction, and they barley move.