The Adobe World-Ready composers break hyperlinks to internal text anchors when the document is exported to PDF.

Internal document links are composed of a source and a destination. The hyperlinks seem to get dropped when the destination is in a paragraph that uses one of the World-Ready composers.

The hyperlinks appear to work correctly in the hyperlinks panel within InDesign. It's only once the file is exported to a PDF and opened in a program like Acrobat that this issue becomes apparent. When reviewing the output in Acrobat, the destination no longer appears to be present in the document at all.

This does not seem to be a problem when Adobe Single-line Composer or Adobe Paragraph Composer are used, but this is not always a realistic solution.

This is an issue in at least the last 2 major versions of InDesign (19.X and 20.X).