Mesh Particle System made to show a visualization of a shockwave will not render with the refraction component of the material unless a static mesh with the material applied to it is also in camera view.

Steps to Reproduce

1. Open Attached ParticleTestProject.uproject found in
2. PIE
3. Rotate Camera to the Right until Sphere Mesh is visible

RESULTS: Refraction in Particle Effect works in Editor, DOES NOT work when first PIE, works again when Sphere is in Camera View

EXPECTED: Refraction Effect from material should always be present in Particle Effect.

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ComponentUE - Rendering
Affects Versions4.7
Target Fix4.7
Fix Commit2391550
Release Commit2420375
CreatedDec 16, 2014
ResolvedDec 17, 2014
UpdatedApr 27, 2018