SceneView crash on macOS Big Sur Beta 6

This was working on previous macOS Big Sur Beta 5, but as of Beta 6, with this minimal code, my macOS app crashes instantly when started.

Code: ModelView.swift

Code Block 
import SwiftUI
import SceneKit
struct ModelView: View {
    var body: some View {
        return SceneView(scene: SCNScene())
    }
}

Crash details:

Code Block 
language
code-blockdyld`__abort_with_payload:
    0x11ae8f6f4 <+0>:  movl   $0x2000209, %eax          ; imm = 0x2000209 
    0x11ae8f6f9 <+5>:  movq   %rcx, %r10
    0x11ae8f6fc <+8>:  syscall 
->  0x11ae8f6fe <+10>: jae    0x11ae8f708               ; <+20>
    0x11ae8f700 <+12>: movq   %rax, %rdi
    0x11ae8f703 <+15>: jmp    0x11ae8d8e4               ; cerror_nocancel
    0x11ae8f708 <+20>: retq   
    0x11ae8f709 <+21>: nop    
    0x11ae8f70a <+22>: nop    
    0x11ae8f70b <+23>: nop    

When I look at the report, it shows this:

Code Block 
dyld: Library not loaded: /System/Library/Frameworks/_SceneKit_SwiftUI.framework/Versions/A/_SceneKit_SwiftUI
  Referenced from: /Users/myuser/Library/Developer/Xcode/DerivedData/test-sceneview-evrchiajpqhubmeajvyhnlrdpiju/Build/Products/Debug/test-sceneview.app/Contents/MacOS/test-sceneview
  Reason: image not found

And indeed that lib is not there.

I'm curious if anyone else has seen this, or can confirm that I am not crazy? (well, not about this anyway).

I submitted feedback (FB8668898).

Eric