Hello,
Thank you for your letter. Which version are you testing with? There is no problem when I tested our latest version(
Spire.PDF Pack(Hot Fix) Version:11.1.0). If you are using an old version, it is recommended to retest with the latest version. Our latest version includes more new features and optimizations. If there are still issues, please provide more information below for further investigation
1. Your complete test code.
2. The project framework.
3. Your system information (E.g. Win10, 64 bit) and region setting (E.g. China, Chinese).
Sincerely,
Lisa
E-iceblue support team