Using Aspose.Words 22.3. I create PDF/A-1a documents, and the resulting PDFs are tested with PAC3 (https://www.access-for-all.ch/ch/pdf-werkstatt/pdf-accessibility-checker-pac.html ) for accessibility. But both detect figure elements without alternative text, but I guess, the element should not be a figure but an artifact instead.
This is a similar problem as the one which was solved with WORDSNET-21521 last year.
Attached are input and output files and a screenshot of a PAC3 check: 4055.zip (245.5 KB)