Values passed through VertexInterpolators are incorrect in the pixel shader on Niagara mesh particles when material uses SubUV animation

Passing through the vertex interpolator, the DebugFloat3Values output appears garbled, but if you remove the VertexInterpolator the particle’s position is accurately returned. This happens with Particle Position, or even a Constant3 vector.

Attached project has the full repro. Short version is to create a Niagara system with a Mesh Renderer, set up a SubUV Animation module in the emitter’s Particle Update, and in your material use a Particle SubUV Sampler, or the Particle SubUV Properties input. Add that result to Particle Position → VertexInterpolator → DebugFloat3Values and pipe that to Emissive.