IssueTracker

Component used: Fragment
Version used: 1.1.0-alpha06

When adding a retained Fragment when a FragmentManager that has its state saved, the set of retained Fragments is still updated. This can lead to inconsistencies when restoreSaveState is called since it was unaware of the newly retained Fragment.

Stacktrace:
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.lithium.leona.openstud, PID: 19140
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.lithium.leona.openstud/com.lithium.leona.openstud.activities.LauncherActivity}: java.lang.IllegalStateException: Could not find active fragment with unique id d3d7d2aa-4ea1-4a2b-833c-6404dcddf62a
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2955)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3030)
        at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4919)
        at android.app.ActivityThread.-wrap19(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1702)
        at android.os.Handler.dispatchMessage(Handler.java:105)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6938)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
     Caused by: java.lang.IllegalStateException: Could not find active fragment with unique id d3d7d2aa-4ea1-4a2b-833c-6404dcddf62a
        at androidx.fragment.app.FragmentManagerImpl.restoreSaveState(FragmentManagerImpl.java:2434)
        at androidx.fragment.app.FragmentController.restoreSaveState(FragmentController.java:194)
        at androidx.fragment.app.FragmentActivity.onCreate(FragmentActivity.java:279)
        at androidx.appcompat.app.AppCompatActivity.onCreate(AppCompatActivity.java:85)
        at com.lithium.leona.openstud.activities.LauncherActivity.onCreate(LauncherActivity.java:21)
        at android.app.Activity.performCreate(Activity.java:7183)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1220)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2908)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3030)
        at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4919)
        at android.app.ActivityThread.-wrap19(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1702)
        at android.os.Handler.dispatchMessage(Handler.java:105)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6938)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)