diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -8,7 +8,7 @@
 return array(
   'names' => array(
     'core.pkg.css' => 'ca3f6a60',
-    'core.pkg.js' => 'ff529dc7',
+    'core.pkg.js' => 'f6b48b53',
     'darkconsole.pkg.js' => 'e7393ebb',
     'differential.pkg.css' => 'bb338e4b',
     'differential.pkg.js' => '895b8d62',
@@ -346,7 +346,7 @@
     'rsrc/js/application/aphlict/behavior-aphlict-status.js' => 'ea681761',
     'rsrc/js/application/auth/behavior-persona-login.js' => '9414ff18',
     'rsrc/js/application/config/behavior-reorder-fields.js' => '14a827de',
-    'rsrc/js/application/conpherence/ConpherenceThreadManager.js' => '6709c934',
+    'rsrc/js/application/conpherence/ConpherenceThreadManager.js' => 'f8dace3b',
     'rsrc/js/application/conpherence/behavior-drag-and-drop-photo.js' => 'cf86d16a',
     'rsrc/js/application/conpherence/behavior-durable-column.js' => '657c2b50',
     'rsrc/js/application/conpherence/behavior-menu.js' => '804b0773',
@@ -513,7 +513,7 @@
     'conpherence-menu-css' => 'f389e048',
     'conpherence-message-pane-css' => '3150e2a2',
     'conpherence-notification-css' => 'd208f806',
-    'conpherence-thread-manager' => '6709c934',
+    'conpherence-thread-manager' => 'f8dace3b',
     'conpherence-transaction-css' => '25138b7f',
     'conpherence-update-css' => '1099a660',
     'conpherence-widget-pane-css' => '2af42ebe',
@@ -1288,16 +1288,6 @@
       'phabricator-keyboard-shortcut',
       'conpherence-thread-manager',
     ),
-    '6709c934' => array(
-      'javelin-dom',
-      'javelin-util',
-      'javelin-stratcom',
-      'javelin-install',
-      'javelin-workflow',
-      'javelin-router',
-      'javelin-behavior-device',
-      'javelin-vector',
-    ),
     '6882e80a' => array(
       'javelin-dom',
     ),
@@ -1997,6 +1987,16 @@
       'javelin-util',
       'phabricator-busy',
     ),
+    'f8dace3b' => array(
+      'javelin-dom',
+      'javelin-util',
+      'javelin-stratcom',
+      'javelin-install',
+      'javelin-workflow',
+      'javelin-router',
+      'javelin-behavior-device',
+      'javelin-vector',
+    ),
     'f9539603' => array(
       'javelin-behavior',
       'javelin-dom',
diff --git a/webroot/rsrc/js/application/conpherence/ConpherenceThreadManager.js b/webroot/rsrc/js/application/conpherence/ConpherenceThreadManager.js
--- a/webroot/rsrc/js/application/conpherence/ConpherenceThreadManager.js
+++ b/webroot/rsrc/js/application/conpherence/ConpherenceThreadManager.js
@@ -164,15 +164,19 @@
             // Message event for something we already know about.
             return;
           }
-          // If we're currently updating, wait for the update to complete.
+
           // If this notification tells us about a message which is newer than
-          // the newest one we know to exist, keep track of it so we can
-          // update once the in-flight update finishes.
+          // the newest one we know to exist, update our latest knownID so we
+          // can properly update later.
           if (this._updating &&
               this._updating.threadPHID == this._loadedThreadPHID) {
             if (message.messageID > this._updating.knownID) {
               this._updating.knownID = message.messageID;
-              return;
+              // We're currently updating, so wait for the update to complete.
+              // this.syncWorkflow has us covered in this case.
+              if (this._updating.active) {
+                return;
+              }
             }
           }
 
@@ -226,7 +230,8 @@
     syncWorkflow: function(workflow, stage) {
       this._updating = {
         threadPHID: this._loadedThreadPHID,
-        knownID: this._latestTransactionID
+        knownID: this._latestTransactionID,
+        active: true
       };
       workflow.listen(stage, JX.bind(this, function() {
         // TODO - do we need to handle if we switch threads somehow?
@@ -235,6 +240,7 @@
         if (need_sync) {
           return this._updateThread();
         }
+        this._updating.active = false;
       }));
       workflow.start();
     },