Everything was going well till I tried to cut out pill shapes for the speaker grills in this phone mockup. I’ve recalculated normals, because I did have some that were off, but the problem didn’t go away. Shade Flat looks great, but this is a glass piece. It’s gotta be Smooth.
Looks like going to Object Data Properties > Normals > Auto Smooth and checking that box worked. Just for good measure I set the angle to 89.9 degrees.
There’s other spots where I’m having the same issue but they’re more hidden so I’m good I guess.