decided to just keep the Close button the the same side

Author: aanelson

lib/widgets/lightbox.dart

@@ -152,13 +152,13 @@ class _LightboxPageState extends State<_LightboxPage> {
                 child: RealmContentNetworkImage(avatarUrl),
               ),
             )
-          : null;
+          : const SizedBox.shrink();
       appBar = AppBar(
         centerTitle: false,
         foregroundColor: appBarForegroundColor,
         backgroundColor: appBarBackgroundColor,
         leading: avatar,
-        actions: avatar != null ? [const CloseButton()] : null,
+        actions: const [CloseButton()],
         title: RichText(
           text: TextSpan(children: [
             TextSpan(