Fix "This page does not reflow" errors
There is no clear difference between pages which cannot be reflowed and surrounding pages. Competing products have no such page-specific issue. This reading-mode bug makes it impossible to use the Android Reader for book-length PDFs.
I'll attach a simple text-only PDF generated from public-domain HTML. In the current 17.5 version of the Android Reader, 12 of the first 20 pages do not reflow.