I have a UE5 architectural visualization project originally set up for Pixel Streaming. The project uses World Partition and each floor of the building is a separate Packed Level Actor (BPP).
The issue:
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Everything looks normal in the editor
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In Play mode and when rendering, all interior objects are invisible — even when the camera is right next to them
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Actor Hidden In Game is unchecked
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Is Editor Only is unchecked
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World Partition shows Streaming Disabled
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Each Packed Level Actor contains HierarchicalInstancedStaticMesh components
What I’ve tried:
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Actor Hidden In Game → unchecked, not the issue
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Is Spatially Loaded → unchecked, no change
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Set Scalability to Epic → no change
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World Partition → Streaming already disabled
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Set levels to Always Loaded via Levels panel → no change
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Is Editor Only → unchecked, not the issue
Question: Why are the HierarchicalInstancedStaticMeshes inside Packed Level Actors visible in editor but invisible at runtime and in renders? How can I fix this?