scenario: run some client app run the driver, bringing up the client app's source code perform some change to the app's code map, like moving a definition or opening a new definition close the client app perform some action in the driver that causes it to go black, waiting for the app to connect close the driver

Before this commit, changes to the client app's code map would not be saved. When you reopen the driver you'd not see the definition moved or the new definition opened.

No code changes were lost, only layout changes to where the code was positioned on the infinite surface.