Unreal Engine Issues

UE-96220

Lightmaps cannot be created correctly when copying Blueprint that has Static Light as Child Actor component on the level

Lightmaps cannot be created correctly when copying Blueprint that has Static Light as Child Actor component on the level

UDN
Description

In this project, BP with Spot Light registered as Child Actor is placed.
If we copy and build, the following warning will be displayed.

BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_330 'BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_330' has same light GUID as 'BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_323' (Duplicate and replace the orig with the new one)
BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_323 'BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_323' has same light GUID as 'BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_330' (Duplicate and replace the orig with the new one)
BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_331 'BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_331' has same light GUID as 'BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_324' (Duplicate and replace the orig with the new one)
BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_324 'BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_324' has same light GUID as 'BP_Spotlight_GEN_VARIABLE_BP_Spotlight_C_CAT_331' (Duplicate and replace the orig with the new one)
Steps to Reproduce
  1. Open the attached project.
    [Link Removed]
  2. Select the actor in level and Duplicate.
    [Link Removed]
  3. Lightmaps seems to break when I run Light build.
    [Link Removed]

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-96220 in the post.

1
Login to Vote
Won't Fix
ComponentUE - Graphics Features - Lumen
Affects Versions4.25, 5.0.3
CreatedJul 31, 2020
ResolvedJul 19, 2022
UpdatedJul 19, 2022
View Jira Issue