I’ve encountered a shadow rendering issue in Unreal Engine 5.6.
When using Nanite-enabled trees painted with the Foliage Tool, and Evaluate World Position Offset is enabled in the material, the trees do not cast any shadows, neither direct nor indirect, even with Lumen turned off.
However, if I drag and drop the same mesh directly into the level (with identical material and settings), shadows appear as expected.
This issue wasn’t present in UE 5.5, so it seems to be a regression in 5.6.
I’ve tested all combinations:
Nanite + WPO = 
No shadows (only when painted)
Nanite without WPO = 
Shadows work
Non-Nanite + WPO = Shadows work
Has anyone else run into this issue? Is there a known workaround, or has Epic acknowledged this yet?