Lumen GI and Reflections feedback thread

I’m finding that I can’t get Lumen to produce a surface cache at all on any HISM. All Hierarchical Instances produced at run time through a blueprint will render but do not show in the Lumen Scene and Cache. I just get the yellow debug color on the mesh in the Lumen Overview.

However - Instance Static Meshes produced from BPs work just fine with Lumen.

I’ve tested in a new empty project with no changes to defaults, using the engine assets and had no luck. See renders below.

Has anyone else been able to get Lumen to work nicely with HISM?