Hey all,
Some clarification:
I’m not certain whether Hidden was doing more previously than it does now, but to properly make an Actor in level “disabled,” you need to do three major things: Set Hidden in Game, Set Enable Collision, and Set Actor Tick Enabled. Hidden in Game and Visible refer to two different things. Visible only means that you can see it in Viewport during editing. Hidden in Game only refers to visibility during game. So you can have an Actor that is Visible while editing and Hidden during gameplay. default is Visible while editing and NOT Hidden in Game for most Actors.
To effectively hide an Actor and remove its collision, you need to explicitly declare both, either with Construction Script or during Play. In 4.7, you can also use a new node, Set Actor (or Component) Tick Enabled, to make sure nothing else is running.
Hope that helps!