Prevent Chats icon from animating when returning from other activity.

app/src/main/java/org/thoughtcrime/securesms/stories/tabs/ConversationListTabsFragment.kt

@@ -33,6 +33,7 @@ class ConversationListTabsFragment : Fragment(R.layout.conversation_list_tabs) {
   private lateinit var chatsPill: ImageView
   private lateinit var storiesPill: ImageView
 
+  private var shouldBeImmediate = true
   private var pillAnimator: Animator? = null
 
   override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -63,9 +64,10 @@ class ConversationListTabsFragment : Fragment(R.layout.conversation_list_tabs) {
       viewModel.onStoriesSelected()
     }
 
-    update(viewModel.stateSnapshot, true)
-
-    viewModel.state.observe(viewLifecycleOwner) { update(it, false) }
+    viewModel.state.observe(viewLifecycleOwner) {
+      update(it, shouldBeImmediate)
+      shouldBeImmediate = false
+    }
   }
 
   private fun update(state: ConversationListTabsState, immediate: Boolean) {

app/src/main/java/org/thoughtcrime/securesms/stories/tabs/ConversationListTabsViewModel.kt

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms.stories.tabs
 
 import androidx.lifecycle.LiveData
+import androidx.lifecycle.Transformations
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
 import io.reactivex.rxjava3.core.Observable
@@ -15,7 +16,7 @@ class ConversationListTabsViewModel(repository: ConversationListTabRepository) :
   private val store = Store(ConversationListTabsState())
 
   val stateSnapshot: ConversationListTabsState = store.state
-  val state: LiveData<ConversationListTabsState> = store.stateLiveData
+  val state: LiveData<ConversationListTabsState> = Transformations.distinctUntilChanged(store.stateLiveData)
   val disposables = CompositeDisposable()
 
   private val internalTabClickEvents: Subject<ConversationListTab> = PublishSubject.create()