(Critical) Grind powerup doesnt add momentum on inclined surfaces

Summary

When you have a grind powerup and you touch an inclined surface, the player should start sliding towards the direction of the downhill. This is a core mechanic in a lot of games. This no longer works.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Devices

Steps to Reproduce

Place the grind powerup and some stairs
Test
Grab the powerup and jump on the staircase

Expected Result

the player will start sliding with speed on the downhill of the staircase (like a skateboard landing on a slope)

Observed Result

the player slowly slides down the staircase, as if the jump never happened

Platform(s)

pc