Subscene foldouts disappear when reopen scene

Steps to reproduce:

1. Open a project with entities package installed
2. In current scene A, create a subscene with children
3. Open a different scene B
4. Reopen previous scene A

Actual results: Subscene foldouts disappears

Expected results: Subscene foldouts should display

Reproducible with versions: 6000.7

Not reproducible with versions: 

Can’t test with versions: 

Tested on (OS): mac

Notes:

• To follow up on previous review - [Internal link]
• Double click subscene node seems to be able to repaint and bring back foldouts