Spawned actors visible after stopping, not during play

Development Programming & Scripting C++
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1

I’ve created a blueprint function SliceToolTest, that is exposed to blueprint. In this function some ASliceActor should be spawned, but I cannot see them during play, I need to stop the game for them to appear. If I stop the game and start it again they’re still visible.

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2

After CreateMeshSection(), you can try this:

SliceActor->Mesh->MarkRenderStateDirty();

You can also try setting a material.