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Fixed in Unity 5.4.3



Found in


Issue ID




[iOS] Build And Run (Cmd-B) with an app already running in Xcode will cause Unity to hang




Priority: 2Necessary for shipping a final release


Severity: 1Crash, freeze, data loss, work stops

In Unity if you click Cmd+B (build and run) while the game is already running in Xcode 7.3 on device then Unity will hang (beach ball) with dialog "Closing open Unity projects in Xcode".

To repro:
1: Create new project or open attached (attached project just has bundle identifier and scene in build settings set)
2: Build for iOS and run on device
3: While running on device go into Unity and press Cmd+B to do a build and run
4: Unity will hang on "Closing open Unity projects in Xcode"

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