I have the exact same symptoms and issues. FB13700251

Sounds like it might be related to this issue: https://forums.swift.org/t/an-unknown-error-occured-reference-refs-remotes-origin-master-not-found-1/68595/4

I believe this feature was added in Swift 5.4 Swift by sundell has an article about it.

I'm experiencing this same issue. I'm running Monterey on an M1 Mac mini.

I don't know much about it but apparently, a 4X4 matrix is pretty standard for anything having to do with 3D models. https://math.stackexchange.com/questions/336/why-are-3d-transformation-matrices-4-times-4-instead-of-3-times-3

Same issue: Xcode 12.4 macOS 11.2.2 Apple M1

I have something similar. Views are showing up in my Library, but not modifiers, even when I have the canvas open. I'm using Xcode 12.4 and Big Sur 11.2.2.