Bug: PDF export, replacing text with blank pages mid-document
This bug has been around for many years now, over many versions of InDesign, at least since 2020, and I think best detailed in the link below, but it seems others have reported issues of the same nature too, to which there are just no replies from Adobe.
We work on hundreds of books a year, mostly straight text - novels etc - and have found that for no discernible reason, perhaps one time in a thousand, a book will be exported containing blank pages where there should be text, though retaining the book's cropmarks, just deleting the actual text itself. I can share files with any Adobe people who contact me but can't post them publicly for copyright reasons. It's not reproducible, and seems to fix itself even if the file is totally unaltered just by doing a second export. The problem is that it's hard to spot and extremely dangerous to have software that randomly blanks out a few pages for no reason whatsoever. I would expect either a warning or a failure to export if this was the case, but it's just silently generated, with the text blanked out here and there, which makes it completely unreliable and a critical and very expensive failure. Currently running on MacOS Tahoe 26.6.2, InDesign 20.5.2, but this is a bug going back at least 6 years and multiple OSs.
For earlier details on this supposedly fixed issue see this, marked as closed:
https://indesign.uservoice.com/forums/601180-adobe-indesign-bugs/suggestions/47012170-18-4-and-18-5-exported-pdf-corrupted?page=4&per_page=20
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