Flattening transparencies results in duplicated pages
When flattening transparencies in Adobe Acrobat Pro DC (2019.008.20071) on single pages the pages are duplicated in the document after flattening.
Rae Benedetto commented
Recently had a similar problem. Working in a 58 page tagged document. One page "disappeared" and the page following duplicated itself. I was doing routine clean up in the Tags Panel, not flattening. Could not reproduce the problem. Not really sure when in my workflow it occurred as several previous version had the duplicated/deleted page.