Component used: livedata
Version used:1.1.1
Devices/Android versions reproduced on: Android 4.x and 5.x

This is not something I can reproduce, but I'm seeing many errors in Crashlytics.

LiveData is supposed to notify changes only when it's safe to do fragment transactions, so this should not be happening, if I understand it correctly.

This is one of the exceptions I'm seeing:

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
android.support.v4.app.FragmentManagerImpl.checkStateLoss (FragmentManager.java:2055)
android.support.v4.app.FragmentManagerImpl.enqueueAction (FragmentManager.java:2078)
android.support.v4.app.BackStackRecord.commitInternal (BackStackRecord.java:678)
android.support.v4.app.BackStackRecord.commit (BackStackRecord.java:632)
android.support.v4.app.DialogFragment.show (DialogFragment.java:160)
ar.com.lichtmaier.antenas.Pagame.mostrar (Pagame.java:33)
ar.com.lichtmaier.antenas.AntenaActivity.esPro (AntenaActivity.java:708)
ar.com.lichtmaier.antenas.AntenaActivity.bridge$lambda$0$AntenaActivity (AntenaActivity.java)
ar.com.lichtmaier.antenas.AntenaActivity$$Lambda$0.onChanged (Unknown Source)
android.arch.lifecycle.LiveData.considerNotify (LiveData.java:109)
android.arch.lifecycle.LiveData.dispatchingValue (LiveData.java:121)
android.arch.lifecycle.LiveData.access$400 (LiveData.java:59)
android.arch.lifecycle.LiveData$ObserverWrapper.activeStateChanged (LiveData.java:416)
android.arch.lifecycle.LiveData$LifecycleBoundObserver.onStateChanged (LiveData.java:368)
android.arch.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent (LifecycleRegistry.java:354)
android.arch.lifecycle.LifecycleRegistry.forwardPass (LifecycleRegistry.java:292)
android.arch.lifecycle.LifecycleRegistry.sync (LifecycleRegistry.java:332)
android.arch.lifecycle.LifecycleRegistry.moveToState (LifecycleRegistry.java:137)
android.arch.lifecycle.LifecycleRegistry.handleLifecycleEvent (LifecycleRegistry.java:123)
android.arch.lifecycle.ReportFragment.dispatch (ReportFragment.java:121)
android.arch.lifecycle.ReportFragment.onResume (ReportFragment.java:88)
android.app.Fragment.performResume (Fragment.java:2096)
android.app.FragmentManagerImpl.moveToState (FragmentManager.java:928)
android.app.FragmentManagerImpl.moveToState (FragmentManager.java:1067)
android.app.FragmentManagerImpl.moveToState (FragmentManager.java:1049)
android.app.FragmentManagerImpl.dispatchResume (FragmentManager.java:1879)
android.app.Activity.performResume (Activity.java:6128)
android.app.ActivityThread.performResumeActivity (ActivityThread.java:2995)
android.app.ActivityThread.handleResumeActivity (ActivityThread.java:3037)
android.app.ActivityThread$H.handleMessage (ActivityThread.java:1350)
android.os.Handler.dispatchMessage (Handler.java:102)
android.os.Looper.loop (Looper.java:135)
android.app.ActivityThread.main (ActivityThread.java:5290)
java.lang.reflect.Method.invoke (Method.java)
java.lang.reflect.Method.invoke (Method.java:372)
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:911)
com.android.internal.os.ZygoteInit.main (ZygoteInit.java:706)