Hi sserra,
Sorry for late reply as weekend.
Spire.Doc Pack(hot fix) Version:6.12.1 includes the fix of your issue, welcome to download and test it.
Besides, from our record, you purchased Spire.Doc and Spire.Barcode. Note if you want to use these two products or more products in same project, you need to download the Spire.Office and reference the corresponding dll from it. Then apply the two licenses. That's why I inform you the hotfix of Spire.Office.
If there is any question, welcome to write back to us.
Sincerely,
Betsy
E-iceblue support team