NativeScript: Crash on app resume: The specified child already has a parent.

Not sure if related to #6199 (not using tabs), but I am having a serious issue where the app crashes after it comes back from being in the background: The specified child already has a parent. You must call removeView() on the child's parent first.

The full exception is below.

System.err: java.lang.RuntimeException: Unable to resume activity {com.abhayastudios.myapp/com.tns.NativeScriptActivity}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
System.err:   at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3788)
System.err:   at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3828)
System.err:   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1746)
System.err:   at android.os.Handler.dispatchMessage(Handler.java:105)
System.err:   at android.os.Looper.loop(Looper.java:164)
System.err:   at android.app.ActivityThread.main(ActivityThread.java:6938)
System.err:   at java.lang.reflect.Method.invoke(Native Method)
System.err:   at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
System.err:   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
System.err: Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
System.err:   at android.view.ViewGroup.addViewInner(ViewGroup.java:5122)
System.err:   at android.view.ViewGroup.addView(ViewGroup.java:4953)
System.err:   at android.view.ViewGroup.addView(ViewGroup.java:4893)
System.err:   at android.view.ViewGroup.addView(ViewGroup.java:4866)
System.err:   at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1425)
System.err:   at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1750)
System.err:   at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1819)
System.err:   at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:797)
System.err:   at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2590)
System.err:   at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2377)
System.err:   at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2332)
System.err:   at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2239)
System.err:   at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:379)
System.err:   at android.support.v4.app.FragmentActivity.onResume(FragmentActivity.java:461)
System.err:   at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1361)
System.err:   at android.app.Activity.performResume(Activity.java:7353)
System.err:   at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3763)
System.err:   ... 8 more

Which platform(s) does your issue occur on?

Android

Please provide the following version numbers that your issue occurs with:

• CLI: 4.2
• Cross-platform modules: 4.3.0-2018-08-17-04
• Runtime(s): 4.2
• Plugin(s): (look for the version number in the package.json file of your project)

Please tell us how to recreate the issue in as much detail as possible.

Is there code involved? If so, please share the minimal amount of code needed to recreate the problem.