Launched sim won't leave home menu

[KatieWoe]

For ES6 testing.
When launching from studio, I was on the third screen. However, the launched sim is on the home screen. I was unable to navigate into the sim from the home screen.

[KatieWoe]

In ESPB as well

[chrisklus]

@samreid could you clarify why this is high priority? Is state currently expected to work in this sim? From the console errors I'm seeing, it seems to be crashing before screenProperty's state has been set, which would explain why it's on the first screen instead of the third.

[samreid]

Thanks for correcting me, I incorrectly hypothesized that this was a cross-sim issue. Changing priority accordingly.

[samreid]

Unassigning until we turn our attention to phet-io for this sim.