Custom Stencil/ Depth not working on GeometryCache actors

When using a custom stencil on GeometryCache actors it does not work in editor or render pass.

Found in 4.20 Preview 5 CL# 4173640 and 4.21 CL# 4198240

1. Open the editor
2. Go to project settings and set "Custom Depth-Stencil pass" to "Enabled With Stencil"
3. Import the attached file as a geometry cache
4. Place the item in the geometry cache actor in the level
5. Place a cube in the level
6. Enable "CustomDepth" on both the cube and geometry cache
7. Set their stencil value to anything other than 0
8. Change the view mode from lit to "Custom Depth" under "Buffer Visualization"

Results:
The imported geometry cache actor will not show up even with the custom depth enabled, but the cube will.

Expected:
Both the cube and imported geometry cache would show up in the custom depth visualization