diff --git a/lib/timeline/component/ItemSet.js b/lib/timeline/component/ItemSet.js
index 1036b316..a7e50cd2 100644
--- a/lib/timeline/component/ItemSet.js
+++ b/lib/timeline/component/ItemSet.js
@@ -1850,7 +1850,7 @@ ItemSet.prototype._onAddItem = function (event) {
     };
 
     if (event.type == 'drop') {
-      var itemData = JSON.parse(event.dataTransfer.getData("text/plain"))
+      var itemData = JSON.parse(event.dataTransfer.getData("text"))
       newItemData.content = itemData.content; // content is required 
       newItemData.type = itemData.type || 'box';
       newItemData[this.itemsData._fieldId] = itemData.id || util.randomUUID();