Hi Gerhard
Polzhofer,
Greetings from Syncfusion.
We are unable
to reproduce the issue at our end. We suspect that it could be a
document-specific issue. So, please share the issue reproducing Excel document
which would help us to proceed further.
We request you to share the Excel file for the testing
purpose only, so if you have any issues in sharing the file through this forum
you can create the ticket for this issue and then share the file through the
ticket.
Kindly use the following link to create the ticket.
https://support.syncfusion.com/create
Regards,
Ramya.