--- a/reviewboard/reviewboard/static/rb/js/views/reviewRequestEditorView_mozreview.js
+++ b/reviewboard/reviewboard/static/rb/js/views/reviewRequestEditorView_mozreview.js
@@ -1353,18 +1353,16 @@ RB.ReviewRequestEditorView = Backbone.Vi
             editor.setSize(null, 'auto');
         }
 
         /*
          * Set the review request box's main height to take up the full
          * amount of spaces between its top and the top of the "extra"
          * pane (where the issue summary table and stuff live).
          */
-        this._$main.height(this._$extra.offset().top -
-                           this._$main.offset().top);
         height = this._$main.height();
 
         if ($lastContent.outerHeight() + lastContentTop < height) {
             $lastContent.outerHeight(height - lastContentTop);
 
             /*
              * Get the size of the content box, and factor in the padding at
              * the bottom, to balance out position()'s calculation of the