Instance Static Mesh element not rendered if array element is removed and another is added

Instance Static Mesh element is not rendered if array element is removed and another is added. The collision is still present and the instance count will still register as if the non-rendered element is still there.

1. Open the attached test project
2. PIE
3. Press the 1-key 5 times to create an Instanced Static Mesh component and 5 instance array elements
4. Press the 2-key to remove the 3rd array element
5. Press 1-key again to add another array element

Results: Although a new array element will be added, one will disappear. The collision is still preset for the non-rendered element and if you press the 3-key you will print the instance count which will be 5 although only 4 are rendered.

Expected: For no array elements to disappear when a new element is added in this way.

[BUG] Instanced Static Mesh: New instances visually replace old instances after instance removal

Removing a ISMC instance makes the last added mesh instance invisible

Removing a ISMC instance makes the last added mesh instance invisible

Removing a ISMC instance makes the last added mesh instance invisible

[Bug] Instanced Static Mesh Component is broken in 4.17.1

Problems with remove instance function (ISMC)