Skeletal meshes disappear after playing in editor while forward renderer is enabled

Development Character & Animation
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1

We have encountered a rendering issue in the editor while forward rendering is enabled. As described in the attached STR, the issue seems to occur when playing in editor, and then returning to the editor. The result is that skeletal meshes in the scene either do not appear or are only partially visible. Please see the attached zip file for screenshots.

We suspect the issue may be related to the forward renderer as we cannot reproduce the issue when forward rendering is disabled. Is this a known issue, and is there perhaps a rendering setting that is the cause?

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2

Steps to Reproduce

  1. Ensure that forward rendering is enabled
  2. Use ‘Lit’ as the view mode setting
  3. Load a scene with a skeletal mesh
  4. Begin playing the level using play in editor
  5. Stop playing and return to the editor.
  6. Observe that the skeletal mesh is either invisible or partially visible.
  7. Change the view mode setting to ‘Lit Wireframe’. Observe that the mesh is now visible.
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3

Hello, I wasn’t able to find any known issues. Can you provide a simple repro in vanilla UE for us to look at?

Please also check if it’s an issue with occlusion by testing with r.AllowOcclusionQueries 0 and r.HZBOcclusion 0 separately.

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4

Hello Alex. Thank you for getting back to me. I’ll try to get back to you with a repro in a vanilla UE project as soon as I can.

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