Is Skeletal Mesh Component cast hidden shadows option not working for anyone else?

I'm not sure if anyone else has encountered this. I'm on 4.25 (and tried on 4.24.3) and trying to cast the shadow for a hidden bone on my skeletal mesh component. I know this has worked for me in the past on other projects. I thought I was going crazy so I tested it on a BP only character and the same results.

I've set the option "Hidden Shadow" to checked/true under lighting for the mesh component. It's not working in blueprint or in my code on BeginPlay():

HeroMesh->HideBoneByName("head", PBO_None); // Hide the player head to make our life easier HeroMesh->bCastHiddenShadow = true;