Editing a classification code while copying an item doesnot have the updated code on the item

Summary:

When we copy an existing item which has a classification code and edit the classification code on the new item and save the item, the new classification code does not get reflected on the item, still the old code is shown.

but at the second attempt it works and the new code is updated on the item.
Please Suggest

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):25A

Code Snippet (add any code snippets that support your topic, if applicable):