fix bubble height change glitch

Closes #4033
// FREEBIE

res/layout/conversation_item_pending_v11.xml

@@ -5,7 +5,7 @@
     <pl.tajchert.sample.DotsTextView
             android:id="@+id/pending_indicator"
             android:layout_width="20dp"
-            android:layout_height="wrap_content"
+            android:layout_height="20dp"
             android:visibility="gone"
             android:textAppearance="?android:attr/textAppearanceSmall"
             android:fontFamily="sans-serif-light"