Hi Bernard,
Thank you very much for using the Syncfusion products.
I have set the borders and colors for the cell seperately to reproduce the issue. But we could not able to reproduce the reported issue. I have also attached the sample tested at our side along with this update. Please have a look on that and let us know whether the issue reported at your side is the same.
Please let us know if you have any clarifications.
Thanks,
Jawahar.
OpenAnExcelFile_64f9c890.zip