Integrator: Interface Window State Not Properly Updated

[Dog]

Issue summary

If I close an interface window then the state is not properly updated. For Search, Variables, and Scenario information this means that you must go to the system menu bar, click window, and click its name for the state to update. The inverse is true for cheats.

This is true for both attached and detached windows.

Steps

1. Start A Game
2. Close the Variables window
3. Go to the system menu bar and select "Window" and notice the Variable window is still checked
4. Uncheck the Variable window
5. Go to the system menu bar and select "Window" and select to show the Variable window
6. The Variable window should now be back

Expectation

The window state should not need to be updated via the system menu bar.

System information

• Mac OS X 10.13.3
• Python 3.6.4
• develop branch (0.6.0.dev17+gba95d9b)