Locator shows functions from closed project/file

1. Open qtdeclarative/examples/quick/demos/samegame/samegame.qmlproject from a Qt5 repository.
2. Type "m start" into the Locator.
   Locator suggests function "startNewGame(gc, mode, map)".
3. Press Enter.
   A JavaScript editor will show the function in a file from the open project.
4. Close all editors and projects.
5. Type "m start" into the Locator.
   Locator still suggests function "startNewGame(gc, mode, map)".
6. Press Enter.
   A JavaScript editor will show the function in a file from the closed project.

This will get very confusing when you open a different project which has a function of the same name. The locator should not show functions or other items from closed projects.