Description

Lighting needs to be rebuilt in Content Examples Lighting level every time the editor is reopened.

If the user builds lighting, saves the level, closes the editor, then reopens the level, lighting is unbuilt again.

Spoke to Marcus W. about this issue and it may be related to [Link Removed] this existing issue.

Using Console Command "dumpbuiltlightinginteractions"

 DumpUnbuiltLightIteractions
Lights with unbuilt interactions: 4
    Light PointLight32
    Light PointLight31_1
    Light PointLight28
    Light DirectionalLight_1
Primitives with unbuilt interactions: 1
    Primitive StaticMeshComponent /Game/Maps/Lighting.Lighting:PersistentLevel.BP_DemoRoom3.StaticMeshComponent_118
LogEditorViewport: Clicking on Actor (LMB): BP_DemoRoom_C (BP_DemoRoom4)
Steps to Reproduce
  1. Open Content Examples
  2. Open Lighting level
  3. PIE (Lighting needs to be rebuilt)
  4. Rebuild lighting
  5. When lighting finishes building, PIE (No lighting rebuilt errors)
  6. Save the level and close the editor
  7. Open Content Examples
  8. Open Lighting level
  9. PIE
    RESULT: Lighting needs to be rebuilt.

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-35259 in the post.

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Fixed
ComponentUE - Graphics Features
Affects Versions4.13
Target Fix4.14
Fix Commit3163135
Release Commit3163135
CreatedAug 28, 2016
ResolvedOct 14, 2016
UpdatedMay 2, 2018