Hello,
When trying to convert a .docx file to PDF using Spire.Doc, I have noticed that our host application memory begins to increase slowly and after some time our application is crashing with Exception code: 0xc00000fd. We have installed the latest version of Spire.Office (v6.8.2).
I am able to reproduce the issue with the specific document and a simple .Net Core Console Application that loads the file in question and tries to save it as a PDF using Spire.Office v6.8.2.
I have packaged up the console application with the file and sent it through as an attachment so you can check the source code and run the application yourself to view the problem. When running the console application you'll notice that the process never finishes even though it should be a simple task, and memory usage of the program will begin to climb slowly until the program crashes with a Stackoverflow 0xc00000fd.
This is a big problem for us as we have this latest version of Spire.Office in Production for our clients and have found this issue (which appears to be a regression from previous versions of Spire.Office).
We are a paid license customer and need this fixed asap. I can provide the license number for you if necessary.