I'm working on a 30 pg document that needs to be an accessible pdf. Typically I link text boxes and add to the articles panel, always with "Use for Tagging Order in Tagged PDF" selected. In a large document I will break it up into sections. I've used the articles panel many times and have never had an issue.
Article Panel currently consists of:
Article 1: Cover
Article 2: Table of Contents
Article 3: Pages 2-15
Article 4: Pages 16-26
Article 5: Glossary
Article 6: Back Cover
For some reason, it will not tag Article 4. When I open the pdf, all other articles are tagged except #4 – Article 4 doesn't exist. Nothing on pages 16-26 is particularly complex, just text and some tables that are embedded in the text box (which also occurs in Article 3).