Here is the project for problem reproduction. It generates test.pptx and test.pdf and data labels representation is significantly different between pdf and pptx.20220802.zip (2.4 KB)
@ygr,
Thank you for reporting the issue. I’ve reproduced the problem with the chart data labels in the PDF document and added a ticket with ID SLIDESJAVA-38880 to our issue tracking system. We apologize for any inconvenience. Our development team will investigate the case. You will be notified when the issue is resolved.