Texture instance can project onto nonexistent geometry

Bug Reports Engine Bugs
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1

I have a mesh which is a sphere cut in half diagonally with two textures parented to it, and these textures seem to be projecting where there is no actual geometry.
For reference, this is with DoubleSided = true

image
image1042×855 44.3 KB

This is with DoubleSided = false:

image
image1083×822 33.7 KB

Here’s a model that can repro the issue:
hemisphere.rbxm (5.0 KB)

Here is the mesh itself, it does have custom normals but I am unsure if that is contributing to the issue:
hemisphere2.obj (8.6 KB)

Specs:
RTX 5090
Ryzen 7 7800X3D
64 GB DDR5 @ 6000MHz

This isn’t a huge issue for me since those portions are being covered with the other half of the sphere but felt like I should report it anyway.