'GetInstancesOverlappingSphere' doesn't work in construction script?

Hey all,

I have a complex construction script based editor tool that scatters HISM components with instances all over. I am trying to now use a Sphere with ‘Get Instances Overlapping Sphere’ to do things with specific instances such as cull them. However the node Always returns an empty array, IE no instances even though I am absolutely certain it should.

Has anyone run into this?