Xcode not reusing already opened packager

[nbastoWM]

Description

On my early RN projects when I run a project from Xcode it used to "reuse" the already opened packager. Now, since using RN 0.41 / Xcode 8.2, every time I run a project from Xcode, in simulator or on device, if the packager is already running it tells me that the port 8081 is already in use and I have to stop/close the packager so it launches from xcode.

Reproduction

• Open Xcode with a RN project,
• run the product on the simulator, it starts the packager automatically,
• stop the project,
• run the product again,
• error appears - Port 8081 already in use, packager is either not running or not running correctly

Additional Information

• React Native version: 0.41
• Platform: iOS
• Operating System: MacOS
• Dev tools: Xcode 8.2.1

[hramos]

We're cutting down on the number of outstanding issues, in order to allow us to focus. I'm closing this issue because it has been open for over 60 days with no activity. If you think it should still be opened let us know why. PRs are always welcome.