Tick appearing in conversion

I am trying to convert my word documents to pdf using aspose. For some reason a number of these documents are coming out with ticks on the top left hand side. I have no idea why this is occuring and can’t see a pattern to determine which documents it’s happening too. Has anyone got an idea as to why this is happening?

Please save the intermediary xml document and attach it here for testing.

I will investigate it and reply to you soon.