I was having the same issue with Aspose Word for Java version 14.12 and I upgraded to 18.2 and it was fixed. Then I tried 19.11 and 20.2 and it seems like it resurfaced in those versions. Can you confirm since we would like to upgrade to the latest version while we’re upgrading?
Please ZIP and upload your input Word document (you are getting this problem with) and a piece of source code here for testing. We will then investigate the issue on our end and provide you more information.