Hi PCwang,
Thanks for raising the concern.
Please be suggested to get the issue reported to technical support using our support portal at https://supportportal.gemalto.com/csm .
Also, it may be helpful if you can provide below details :
1. Is the issue getting reproduced with latest envelope version 7.10 ?
2. what are the platform details used in build of this DLL ?
You can download the latest Sentinel LDK SDK from artcile ID 'KB0018327' from support portal.
Thanks & regards,
Parth Kaushik