Containers of Instanced Subobjects don't inherit as expected

Changes made to array containers in the parent Instanced Subobject Blueprint does not affect the child.

Working in 4.18.3

Broken in 4.19.2

Tested in  4.18.3(CL - 3832480), 4.19 (CL - 4033788), 4.20 (CL -  4189817), 4.21 (CL - 4188563)

1. Download attached project
2. Generate Visual Studio project files
3. Open uproject
4. Create a Blueprint from UObjectWithInstanceArray named UObjectArray_BP
5. Make a child Blueprint from the UObjectArray_BP
6. Open both in the editor with them both in view
7. Add array instances to the parent BP
8. Set one of the elements to InstanceObject
9. Expand the same element and enter Hello to the String property

Expected: The child Blueprint inherits the changes made to the parent Blueprint

Result: The child Blueprint does not inherit the change