Fixes

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -1376,10 +1376,9 @@ public class FragmentCompose extends FragmentEx {
                         public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                             EntityAccount account = (EntityAccount) parent.getAdapter().getItem(position);
 
-                            if (liveIdentities == null)
-                                liveIdentities = db.identity().liveIdentities(account.id, true);
-                            else
+                            if (liveIdentities != null)
                                 liveIdentities.removeObservers(getViewLifecycleOwner());
+                            liveIdentities = db.identity().liveIdentities(account.id, true);
 
                             liveIdentities.observe(getViewLifecycleOwner(), new Observer<List<EntityIdentity>>() {
                                 @Override

app/src/main/java/eu/faircode/email/ServiceTileUnseen.java

@@ -86,8 +86,10 @@ public class ServiceTileUnseen extends TileService {
 
     public void onStopListening() {
         Log.i(Helper.TAG, "Stop tile unseen");
-        if (liveMessages != null)
+        if (liveMessages != null) {
             liveMessages.removeObservers(owner);
+            liveMessages = null;
+        }
     }
 
     public void onClick() {