Missing ALT-Text in PDF
Since the latest update to InDesign 16.3.2 alternative text to hyperlinks and cross-references is not included in the <Link> tag of the exported PDF-document.
It has been implemented this way as per Accessibility Requirements.
According to Accessibility Requirements, Alt Text should be placed under the /K Array in the Dictionary – please see attachment for more information.
Adobe InDesign team
please explain this 'solution' further