UDN Licensee reported this on 4.16, and I can repro in 4.17- 4.19. 

Per Licensee:

I'm trying to use distance field shadows on very large objects, but it looks like it does not work.

Can you suggest how to make this work?

Steps to Reproduce
  1. Open attached Project
  2. Select "Shadow_Cube" static mesh
  3. Transform the Scale value in X,Y,or Z from 577 to 578

Result: Shadow disappears

Expected: Shadow will remain visible

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-58973 in the post.

Login to Vote

By Design
ComponentUE - Graphics Features
Affects Versions4.
CreatedMay 10, 2018
ResolvedMay 14, 2018
UpdatedMay 16, 2018
View Jira Issue