diff --git a/src/applications/conpherence/view/ConpherenceTransactionView.php b/src/applications/conpherence/view/ConpherenceTransactionView.php
index 502bb25e6d..2e070f92d7 100644
--- a/src/applications/conpherence/view/ConpherenceTransactionView.php
+++ b/src/applications/conpherence/view/ConpherenceTransactionView.php
@@ -1,231 +1,233 @@
 <?php
 
 final class ConpherenceTransactionView extends AphrontView {
 
   private $conpherenceTransaction;
   private $handles;
   private $markupEngine;
   private $showImages = true;
   private $showContentSource = true;
 
   public function setMarkupEngine(PhabricatorMarkupEngine $markup_engine) {
     $this->markupEngine = $markup_engine;
     return $this;
   }
 
   public function setHandles(array $handles) {
     assert_instances_of($handles, 'PhabricatorObjectHandle');
     $this->handles = $handles;
     return $this;
   }
 
   public function getHandles() {
     return $this->handles;
   }
 
   public function setConpherenceTransaction(ConpherenceTransaction $tx) {
     $this->conpherenceTransaction = $tx;
     return $this;
   }
 
   private function getConpherenceTransaction() {
     return $this->conpherenceTransaction;
   }
 
   public function setShowImages($bool) {
     $this->showImages = $bool;
     return $this;
   }
 
   private function getShowImages() {
     return $this->showImages;
   }
 
   public function setShowContentSource($bool) {
     $this->showContentSource = $bool;
     return $this;
   }
 
   private function getShowContentSource() {
     return $this->showContentSource;
   }
 
   public function render() {
     $user = $this->getUser();
     $transaction = $this->getConpherenceTransaction();
     switch ($transaction->getTransactionType()) {
       case ConpherenceTransactionType::TYPE_DATE_MARKER:
         return phutil_tag(
           'div',
           array(
             'class' => 'date-marker',
           ),
           array(
             phutil_tag(
               'span',
               array(
                 'class' => 'date',
               ),
               phabricator_format_local_time(
                 $transaction->getDateCreated(),
                 $user,
               'M jS, Y')),
           ));
         break;
     }
 
     $handles = $this->getHandles();
     $transaction->setHandles($handles);
     $author = $handles[$transaction->getAuthorPHID()];
     $transaction_view = id(new PhabricatorTransactionView())
       ->setUser($user)
       ->setEpoch($transaction->getDateCreated())
       ->setTimeOnly(true);
     if ($this->getShowContentSource()) {
       $transaction_view->setContentSource($transaction->getContentSource());
     }
 
     $content = null;
     $content_class = null;
     $content = null;
     switch ($transaction->getTransactionType()) {
       case ConpherenceTransactionType::TYPE_TITLE:
         $content = $transaction->getTitle();
         $transaction_view->addClass('conpherence-edited');
+        $transaction_view->addClass('grouped');
         break;
       case ConpherenceTransactionType::TYPE_FILES:
         $content = $transaction->getTitle();
         break;
       case ConpherenceTransactionType::TYPE_PARTICIPANTS:
         $content = $transaction->getTitle();
         $transaction_view->addClass('conpherence-edited');
+        $transaction_view->addClass('grouped');
         break;
       case PhabricatorTransactions::TYPE_COMMENT:
         $comment = $transaction->getComment();
         $content = $this->markupEngine->getOutput(
           $comment,
           PhabricatorApplicationTransactionComment::MARKUP_FIELD_COMMENT);
         $content_class = 'conpherence-message phabricator-remarkup';
         if ($this->getShowImages()) {
           $transaction_view->setImageURI($author->getImageURI());
         }
         $transaction_view->setActions(array($author->renderLink()));
         break;
     }
 
     $transaction_view->appendChild(
       phutil_tag(
         'div',
         array(
           'class' => $content_class,
         ),
         $content));
 
     return $transaction_view->render();
   }
 
   public static function renderTransactions(
     PhabricatorUser $user,
     ConpherenceThread $conpherence,
     $full_display = true) {
 
     $transactions = $conpherence->getTransactions();
     $oldest_transaction_id = 0;
     $too_many = ConpherenceThreadQuery::TRANSACTION_LIMIT + 1;
     if (count($transactions) == $too_many) {
       $last_transaction = end($transactions);
       unset($transactions[$last_transaction->getID()]);
       $oldest_transaction = end($transactions);
       $oldest_transaction_id = $oldest_transaction->getID();
     }
     $transactions = array_reverse($transactions);
     $handles = $conpherence->getHandles();
     $rendered_transactions = array();
     $engine = id(new PhabricatorMarkupEngine())
       ->setViewer($user);
     foreach ($transactions as $key => $transaction) {
       if ($transaction->shouldHide()) {
         unset($transactions[$key]);
         continue;
       }
       if ($transaction->getComment()) {
         $engine->addObject(
           $transaction->getComment(),
           PhabricatorApplicationTransactionComment::MARKUP_FIELD_COMMENT);
       }
     }
     $engine->process();
     // we're going to insert a dummy date marker transaction for breaks
     // between days. some setup required!
     $previous_transaction = null;
     $date_marker_transaction = id(new ConpherenceTransaction())
       ->setTransactionType(ConpherenceTransactionType::TYPE_DATE_MARKER)
       ->makeEphemeral();
     $date_marker_transaction_view = id(new ConpherenceTransactionView())
       ->setUser($user)
       ->setConpherenceTransaction($date_marker_transaction)
       ->setHandles($handles)
       ->setShowImages($full_display)
       ->setShowContentSource($full_display)
       ->setMarkupEngine($engine);
     foreach ($transactions as $transaction) {
       if ($previous_transaction) {
         $previous_day = phabricator_format_local_time(
           $previous_transaction->getDateCreated(),
           $user,
           'Ymd');
         $current_day = phabricator_format_local_time(
           $transaction->getDateCreated(),
           $user,
           'Ymd');
         // date marker transaction time!
         if ($previous_day != $current_day) {
           $date_marker_transaction->setDateCreated(
             $transaction->getDateCreated());
           $rendered_transactions[] = $date_marker_transaction_view->render();
         }
       }
       $rendered_transactions[] = id(new ConpherenceTransactionView())
         ->setUser($user)
         ->setConpherenceTransaction($transaction)
         ->setHandles($handles)
         ->setMarkupEngine($engine)
         ->setShowImages($full_display)
         ->setShowContentSource($full_display)
         ->render();
       $previous_transaction = $transaction;
     }
     $latest_transaction_id = $transaction->getID();
 
     return array(
       'transactions' => $rendered_transactions,
       'latest_transaction' => $transaction,
       'latest_transaction_id' => $latest_transaction_id,
       'oldest_transaction_id' => $oldest_transaction_id,
     );
   }
 
   public static function renderMessagePaneContent(
     array $transactions,
     $oldest_transaction_id) {
 
     $scrollbutton = '';
     if ($oldest_transaction_id) {
       $scrollbutton = javelin_tag(
         'a',
         array(
           'href' => '#',
           'mustcapture' => true,
           'sigil' => 'show-older-messages',
           'class' => 'conpherence-show-older-messages',
           'meta' => array(
             'oldest_transaction_id' => $oldest_transaction_id,
           ),
         ),
         pht('Show Older Messages'));
     }
 
     return hsprintf('%s%s', $scrollbutton, $transactions);
   }
 
 }