Improved design

lib/views/chat_details.dart

@@ -214,12 +214,18 @@ class _ChatDetailsState extends State<ChatDetails> {
                         : Container(),
                   ],
                 )
-              : i < members.length + 1
+              : i < members.length + 1 && false
                   ? ParticipantListItem(members[i - 1])
                   : ListTile(
                       title: Text(
                           "Load more ${actualMembersCount - members.length} participants"),
-                      leading: Icon(Icons.refresh),
+                      leading: CircleAvatar(
+                        backgroundColor: Colors.white,
+                        child: Icon(
+                          Icons.refresh,
+                          color: Colors.grey,
+                        ),
+                      ),
                       onTap: () => requestMoreMembersAction(context),
                     ),
         ),

lib/views/invitation_selection.dart

@@ -68,7 +68,10 @@ class InvitationSelection extends StatelessWidget {
               return ListView.builder(
                 itemCount: contacts.length,
                 itemBuilder: (BuildContext context, int i) => ListTile(
-                  leading: Avatar(contacts[i].avatarUrl),
+                  leading: Avatar(
+                    contacts[i].avatarUrl,
+                    contacts[i].calcDisplayname(),
+                  ),
                   title: Text(contacts[i].calcDisplayname()),
                   subtitle: Text(contacts[i].id),
                   onTap: () => inviteAction(context, contacts[i].id),