Volume Shaders don't work anymore

Summary

I’ve used volume shaders in previous maps for cool fog effects but in any new projects no matter what I set extinction to in the shader no fog shows up

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Steps to Reproduce

Make volume shader and apply to any mesh

Expected Result

Volume shader works and is visible

Observed Result

Volume shader is invisible

Platform(s)

PC