Make it so input forms that don't have navigation don't accidentally get hidden. Add a "nonav" class to them.

actions/newnotice.php

@@ -331,6 +331,8 @@ class NewnoticeAction extends Action
     }
 
     /**
+     * // XXX: Should we be showing the notice form with microapps here?
+     *
      * Overload for replies or bad results
      *
      * We show content in the notice form if there were replies or results.
@@ -357,7 +359,7 @@ class NewnoticeAction extends Action
             'div',
             array(
                 'id'    => 'input_form_status',
-                'class' => 'input_form current'
+                'class' => 'input_form current nonav'
             )
         );
 

js/util.js

@@ -1389,6 +1389,14 @@ var SN = { // StatusNet
                 $('#input_form_nav_'+tag).addClass('current');
             }
 
+            // Don't remove 'current' if we also have the "nonav" class.
+            // An example would be the message input form. removing
+            // 'current' will cause the form to vanish from the page.
+            var nonav = $('.input_form.current.nonav');
+            if (nonav.length > 0) {
+                return;
+            }
+
 	    $('.input_form.current').removeClass('current');
 	    $('#input_form_'+tag)
                 .addClass('current')

lib/messageform.php

@@ -196,7 +196,7 @@ class MessageForm extends Form
             'div',
             array(
                 'id'    => 'input_form_direct',
-                'class' => 'input_form current'
+                'class' => 'input_form current nonav'
             )
         );