Hi,
Thanks for your inquiry.
I made an initial test with
Spire.XLS Pack(Hotfix) Version:9.10.12 but didn't reproduce your issue. I firstly suggest you try to use the latest one which has more improvements than old versions.
If the issue still exists after trying, to help us investigate your issue accurately, please offer us the following information.
1. Your input Excel file(.xlsm).
2. The complete code you were using which could reproduce your issue directly.
You could upload them here or send us(
support@e-iceblue.com) via email.
Best wishes,
Amber
E-iceblue support team