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' => '0f87bfe0',
-    'core.pkg.js' => 'a79eed25',
+    'core.pkg.js' => 'bf947f93',
     'darkconsole.pkg.js' => 'e7393ebb',
     'differential.pkg.css' => '2de124c9',
     'differential.pkg.js' => '5c2ba922',
@@ -446,7 +446,7 @@
     'rsrc/js/application/uiexample/notification-example.js' => '8ce821c5',
     'rsrc/js/core/Busy.js' => '59a7976a',
     'rsrc/js/core/DragAndDropFileUpload.js' => 'ad10aeac',
-    'rsrc/js/core/DraggableList.js' => 'a16ec1c6',
+    'rsrc/js/core/DraggableList.js' => '255d85da',
     'rsrc/js/core/FileUpload.js' => '477359c8',
     'rsrc/js/core/Hovercard.js' => 'c6f720ff',
     'rsrc/js/core/KeyboardShortcut.js' => '1ae869f2',
@@ -741,7 +741,7 @@
     'phabricator-countdown-css' => 'e7544472',
     'phabricator-dashboard-css' => 'eb458607',
     'phabricator-drag-and-drop-file-upload' => 'ad10aeac',
-    'phabricator-draggable-list' => 'a16ec1c6',
+    'phabricator-draggable-list' => '255d85da',
     'phabricator-fatal-config-template-css' => '8e6c6fcd',
     'phabricator-feed-css' => 'ecd4ec57',
     'phabricator-file-upload' => '477359c8',
@@ -1021,6 +1021,14 @@
       'phabricator-drag-and-drop-file-upload',
       'phabricator-draggable-list',
     ),
+    '255d85da' => array(
+      'javelin-install',
+      'javelin-dom',
+      'javelin-stratcom',
+      'javelin-util',
+      'javelin-vector',
+      'javelin-magical-init',
+    ),
     '2926fff2' => array(
       'javelin-behavior',
       'javelin-dom',
@@ -1587,14 +1595,6 @@
       'javelin-dom',
       'javelin-reactor-dom',
     ),
-    'a16ec1c6' => array(
-      'javelin-install',
-      'javelin-dom',
-      'javelin-stratcom',
-      'javelin-util',
-      'javelin-vector',
-      'javelin-magical-init',
-    ),
     'a2828756' => array(
       'javelin-dom',
       'javelin-util',
diff --git a/webroot/rsrc/js/core/DraggableList.js b/webroot/rsrc/js/core/DraggableList.js
--- a/webroot/rsrc/js/core/DraggableList.js
+++ b/webroot/rsrc/js/core/DraggableList.js
@@ -290,6 +290,11 @@
       }
 
       this._target = false;
+
+      // Clear the target position cache, since adding or removing ghosts
+      // changes element positions.
+      this._dirtyTargetCache();
+
       return this;
     },
 
@@ -298,9 +303,6 @@
       var targets = this._getTargets();
       var dragging = this._dragging;
 
-      var adjust_h = JX.Vector.getDim(ghost).y;
-      var adjust_y = JX.$V(ghost).y;
-
       // Find the node we're dragging the object underneath. This is the first
       // node in the list that's above the cursor. If that node is the node
       // we're dragging or its predecessor, don't select a target, because the
@@ -314,34 +316,23 @@
       var cur_target = null;
       var trigger;
       for (var ii = 0; ii < targets.length; ii++) {
-
-        // If the drop target indicator is above the target, we need to adjust
-        // the target's trigger height down accordingly. This makes dragging
-        // items down the list smoother, because the target doesn't jump to the
-        // next item while the cursor is over it.
-
         trigger = targets[ii].y;
-        if (adjust_y <= trigger) {
-          trigger += adjust_h;
-        }
 
         // If the cursor is above this target, we aren't dropping underneath it.
-
         if (trigger >= p.y) {
           continue;
         }
 
         // Don't choose the dragged row or its predecessor as targets.
-
         cur_target = targets[ii].item;
         if (!dragging) {
           // If the item on the cursor isn't from this list, it can't be
           // dropped onto itself or its predecessor in this list.
         } else {
-          if (cur_target == dragging) {
+          if (cur_target === dragging) {
             cur_target = false;
           }
-          if (targets[ii - 1] && targets[ii - 1].item == dragging) {
+          if (targets[ii - 1] && (targets[ii - 1].item === dragging)) {
             cur_target = false;
           }
         }
@@ -480,7 +471,6 @@
       for (var ii = 0; ii < group.length; ii++) {
         JX.DOM.alterClass(group[ii].getRootNode(), 'drag-target-list', false);
         group[ii]._clearTarget();
-        group[ii]._dirtyTargetCache();
         group[ii]._lastAdjust = null;
       }