OmniSurface materials Dispersion Abbe settings not working on RTX real time and Path Tracer

Omniverse Apps USD Composer (Create)
1

Hi Omniverse team,

Dispersion abbe in my testing only work on iray, Is this setting for this material a current limitation in RTX real time and Path tracer renderer ?

2

I’ve only managed to get it working in Iray too…