Yellow wildflowers flicker when viewed from the side while moving

Yellow wildflowers appear to flicker when viewed from the side/at a distance, possibly due to the model only existing on one plane/having no depth. This issue does not affect pink wildflowers.

Steps to reproduce the issue: View yellow wildflowers from the side/at a distance while moving.

Expected result: No flickering visual, solid model.

Actual result: Flickering, flat model.