We noticed similar output by the API while testing the case in our environment. Therefore, an investigation ticket as PDFNET-50564 has been logged in our issue tracking system. We will further look into its details and keep you posted with the status of its correction. Please be patient and spare us some time.
Can you confirm about the criticality of this issue at your end?
We will be unable to upgrade to newer version of Aspose since this issue has reduced spaces in many places and resulting in a complete mismatch between our HTML and resulting PDF.
We do understand the significance of the issue for you. However, as the issue was logged under free support model and it will be investigated and resolved on a first come first serve basis. We have recorded your concerns and will surely consider them during issue analysis. You will be notified as soon as some significant progress is made towards issue fix. Please spare us some time.