UV sphere that looks like it has quads. This is what it LOOKS LIKE. This is what you SEE.

It doesn't have a single quad. They are all tris. This is what it ACTUALLY IS. This is what is EXPORTED to Blockland.

Two planar tris that share an edge = Looks like 1 quad but is 2 triangles.

Two non-planar tris that share an edge = Looks like 2 triangles.

Actual quads.

