Text reflow only works in one document I've tried
For my horrible vision, I'd like very large, white on black text - and it thus must be reflowed! According to
https://helpx.adobe.com/acrobat/using/reading-pdfs-reflow-accessibility-features.html
It should be simple. Choose View > Zoom > Reflow.
But of all the PDF documents I've tried (mostly academic papers), only one has actually reflowed. The rest sit there unchanged. In some, the "Reflow" choice gets a checkmark which can be removed by choosing it again, but the document doesn't change. In others the "Reflow" choice appears and can be chosen, but it then unchecks itself and turns gray and inactive. In a few it is grayed out when first displayed.
This is in Reader DC Version 2018.009.20050 (I hate it when one can't just copy and paste that information!) No, I can't justify buying a professional version. Is there some way to reflow _any_ PDF, or are these academic papers somehow "protected" from being read by visually handicapped people as well as by poor and academically unaffiliated people?
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