Hi Daniel,
Thank you for using Syncfusion products.
We are unable to reproduce the reported issue at our end. We request you to send us the excel template that causes the issue to investigate further on this and get back to you with a prompt solution. Kindly create a new incident from the below direct track link and update us the template in the incident. We can look into the issue and update you with further details.
Direct Track Link: http://www.syncfusion.com/support/directtrac/dtnewpost
Please let us know if you need any clarification.
Thanks,
Manojkumar.