Niagara Sprite SubUV Skips Images

Niagara SubUV will skip most images in a SubUV sprite. Every 8 frames on the time line once it starts spawning it will change its appears. Only 16 of the 64 images are shown from the SubUV.

Found in 4.20 CL# 4233996 and 4.21 CL# 4275031

1. Open attached project
2. Open the Niagara emitter
3. scrub through the emitters time line slowly and compare the SubUV images to the material being used

Results:
The sprite will skip images in the SubUV

Expected:
It would properly play out the SubUV images