With a Multi Mesh Output and the ShaderGraph integration, disabling CastShadow is only applied on a single mesh index.
Step to repro:
- Import Attached Package in URP project
- Open VisualEffectGraph
- Select Output Mesh
- Untoggle cast shadow
Observe: only half of mesh aren't casting shadow, the capsule still casting shadow
Expected: No shadows
Only reproduce with ShaderGraph.
Doesn't repro on HDRP, only in URP.