Edit by Tor: Changed issue to "Add property context persistence across selections and possibly AppDomain reloads".
After closing a list in the inspector, I select a different gameobject. When I come back to the list, it has opened itself again.
Not usually a problem, but we have nested lists, which are all opened!
Should be easy to replicate -> Make a list, fill it. Close the list in inspector. Select different gameobject. Return to original with List on it. It will be open again.