Index: wp-admin/css/wp-admin.dev.css
===================================================================
--- wp-admin/css/wp-admin.dev.css	(revision 22355)
+++ wp-admin/css/wp-admin.dev.css	(working copy)
@@ -3269,7 +3269,7 @@
 }
 
 #postcustomstuff .submit input,
-#postcustomstuff table #addmetasub {
+#postcustomstuff table #newmeta-submit {
 	width: auto;
 }
 
Index: wp-admin/includes/meta-boxes.php
===================================================================
--- wp-admin/includes/meta-boxes.php	(revision 22355)
+++ wp-admin/includes/meta-boxes.php	(working copy)
@@ -688,7 +688,7 @@
 		<p id="link-category-add" class="wp-hidden-child">
 			<label class="screen-reader-text" for="newcat"><?php _e( '+ Add New Category' ); ?></label>
 			<input type="text" name="newcat" id="newcat" class="form-required form-input-tip" value="<?php esc_attr_e( 'New category name' ); ?>" aria-required="true" />
-			<input type="button" id="link-category-add-submit" class="add:categorychecklist:linkcategorydiv button" value="<?php esc_attr_e( 'Add' ); ?>" />
+			<input type="button" id="link-category-add-submit" class="add:categorychecklist:link-category-add button" value="<?php esc_attr_e( 'Add' ); ?>" />
 			<?php wp_nonce_field( 'add-link-category', '_ajax_nonce', false ); ?>
 			<span id="category-ajax-response"></span>
 		</p>
Index: wp-admin/includes/template.php
===================================================================
--- wp-admin/includes/template.php	(revision 22355)
+++ wp-admin/includes/template.php	(working copy)
@@ -494,7 +494,7 @@
 	$r .= "\n\t\t<div class='submit'>";
 	$r .= get_submit_button( __( 'Delete' ), "delete:the-list:meta-{$entry['meta_id']}::_ajax_nonce=$delete_nonce deletemeta", "deletemeta[{$entry['meta_id']}]", false, array( 'tabindex' => '6' ) );
 	$r .= "\n\t\t";
-	$r .= get_submit_button( __( 'Update' ), "add:the-list:meta-{$entry['meta_id']}::_ajax_nonce-add-meta=$update_nonce updatemeta" , 'updatemeta', false, array( 'tabindex' => '6' ) );
+	$r .= get_submit_button( __( 'Update' ), "add:the-list:meta-{$entry['meta_id']}::_ajax_nonce-add-meta=$update_nonce updatemeta" , "meta-{$entry['meta_id']}-submit", false, array( 'tabindex' => '6' ) );
 	$r .= "</div>";
 	$r .= wp_nonce_field( 'change-meta', '_ajax_nonce', false, false );
 	$r .= "</td>";
@@ -555,7 +555,7 @@
 </tr>
 
 <tr><td colspan="2" class="submit">
-<?php submit_button( __( 'Add Custom Field' ), 'add:the-list:newmeta', 'addmeta', false, array( 'id' => 'addmetasub', 'tabindex' => '9' ) ); ?>
+<?php submit_button( __( 'Add Custom Field' ), 'add:the-list:newmeta', 'addmeta', false, array( 'id' => 'newmeta-submit', 'tabindex' => '9' ) ); ?>
 <?php wp_nonce_field( 'add-meta', '_ajax_nonce-add-meta', false ); ?>
 </td></tr>
 </tbody>
Index: wp-includes/js/wp-lists.dev.js
===================================================================
--- wp-includes/js/wp-lists.dev.js	(revision 22355)
+++ wp-includes/js/wp-lists.dev.js	(working copy)
@@ -78,7 +78,7 @@
 		if ( !s )
 			return false;
 
-		if ( !e.is('[id="' + s.what + '-add-submit"]') )
+		if ( !e.is('[id="' + s.element + '-submit"]') )
 			return !wpList.add.call( list, e, s );
 
 		if ( !s.element )