Hot reload fails after adding a Static Mesh Component to a new Actor code class in a project that was originally Blueprint-only

Starting a hot reload by clicking the Compile button in the Editor fails after adding a Static Mesh Component to an Actor code class. This only occurs in the binary version of the Engine, and only if the project was originally a Blueprint-only project. The error does not occur if the project was originally a code project, or if the Engine was built from source code.

REGRESSION:
Yes, this error did not occur in 4.19.2.

1. Create a new Blank Blueprint project.
2. Add a new Actor code class to the project.
3. Add a Static Mesh Component property to the new Actor class.
   • eg:

     UPROPERTY(EditAnywhere)
     UStaticMeshComponent* MyMesh;
     

4. Create a default subobject for the new Static Mesh Component and set it as the root component.
   • eg:

     MyMesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("MyMesh"));
     RootComponent = MyMesh;
     

5. Click the Compile button in the Editor.

RESULT:
The build fails with the following error: error C2440: '=': cannot convert from 'UStaticMeshComponent *' to 'USceneComponent *'

EXPECTED:
The build completes successfully.