I’ve just tested it and could reproduce the issue. It seems that the post title needs to be exactly the same as the filename, including the spaces. That was why I couldn’t reproduce it.
Could you please open a new ticket so this issue can be passed directly to the plugin author? You can open a new ticket here: https://support.advancedcustomfields.com/new-ticket. Also, please don’t forget to explain the issue again and provide the link to this thread.
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