diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -10,7 +10,7 @@
     'conpherence.pkg.css' => '0e3cf785',
     'conpherence.pkg.js' => '020aebcf',
     'core.pkg.css' => '1b80c45d',
-    'core.pkg.js' => '632fb8f5',
+    'core.pkg.js' => '1e667bcb',
     'dark-console.pkg.js' => '187792c2',
     'differential.pkg.css' => '2d70b7b9',
     'differential.pkg.js' => '22ec6f26',
@@ -508,7 +508,7 @@
     'rsrc/js/core/behavior-tokenizer.js' => '3b4899b0',
     'rsrc/js/core/behavior-tooltip.js' => '73ecc1f8',
     'rsrc/js/core/behavior-user-menu.js' => '60cd9241',
-    'rsrc/js/core/behavior-watch-anchor.js' => 'e55a1db5',
+    'rsrc/js/core/behavior-watch-anchor.js' => 'a77e2cbd',
     'rsrc/js/core/behavior-workflow.js' => '9623adc1',
     'rsrc/js/core/darkconsole/DarkLog.js' => '3b869402',
     'rsrc/js/core/darkconsole/DarkMessage.js' => '26cd4b73',
@@ -658,7 +658,7 @@
     'javelin-behavior-phabricator-tooltips' => '73ecc1f8',
     'javelin-behavior-phabricator-transaction-comment-form' => '2bdadf1a',
     'javelin-behavior-phabricator-transaction-list' => '9cec214e',
-    'javelin-behavior-phabricator-watch-anchor' => 'e55a1db5',
+    'javelin-behavior-phabricator-watch-anchor' => 'a77e2cbd',
     'javelin-behavior-pholio-mock-edit' => '3eed1f2b',
     'javelin-behavior-pholio-mock-view' => '5aa1544e',
     'javelin-behavior-phui-dropdown-menu' => '5cf0501a',
@@ -1874,6 +1874,12 @@
       'javelin-install',
       'javelin-dom',
     ),
+    'a77e2cbd' => array(
+      'javelin-behavior',
+      'javelin-stratcom',
+      'javelin-dom',
+      'javelin-vector',
+    ),
     'a8f573a9' => array(
       'javelin-install',
       'javelin-dom',
@@ -2122,12 +2128,6 @@
       'javelin-dom',
       'phuix-dropdown-menu',
     ),
-    'e55a1db5' => array(
-      'javelin-behavior',
-      'javelin-stratcom',
-      'javelin-dom',
-      'javelin-vector',
-    ),
     'e5bdb730' => array(
       'javelin-behavior',
       'javelin-stratcom',
diff --git a/webroot/rsrc/js/core/behavior-watch-anchor.js b/webroot/rsrc/js/core/behavior-watch-anchor.js
--- a/webroot/rsrc/js/core/behavior-watch-anchor.js
+++ b/webroot/rsrc/js/core/behavior-watch-anchor.js
@@ -98,7 +98,15 @@
       // If there's an "anchor-container" parent element, we'll make the
       // display adjustment to that node instead. For example, this is used
       // by the timeline to highlight timeline stories.
-      var container = JX.DOM.findAbove(node, null, 'anchor-container');
+
+      var container;
+
+      try {
+        container = JX.DOM.findAbove(node, null, 'anchor-container');
+      } catch (ex) {
+        // Ignore.
+      }
+
       if (container) {
         display_target = container;
       } else {