AI Navigation Modification device doesn't prevent access anymore

Summary

Block or Avoid setting, both still generate nav meshes and NPC device guards can pass through the zones. It breaks the immersion and control over the characters, and it also happens with guard device.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

AI

Steps to Reproduce

Add a guard device
Place an elevated platform in the air (2-3 tiles high)
Place the guard on the platform
Try to prevent the guards from falling by placing a navmesh device on the floor or in the sides of the platform
Guards should have “patrol” enabled

Expected Result

Guards patrol the platform area but don’t fall down

Observed Result

Guards will fall down from the platform, even pass from red zones in the navigation debug.

Platform(s)

PC