Groom + RT refraction not working correctly

Download the licensee repro here:
[Link Removed]

In the Main map, select groom_cam and see that refraction on the distant cylinder is working correctly.

Delete/Move refractionProof cylinder out of the way, to show the "hidden" groom asset hair

Select groom_cam again. The revealed groom asset (GRM_debug) is not refracted and actually looks like it may be ignoring z-sort order.

Request a info about UE-127172 bug tracker

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