If you Google "ade page numbers" or "adobe digital editions page numbers" you will find loads of complaints about page numbers in ADE.
ADE calculates page numbers even if they are not included in the EPUB, and they overlap with the text, actually obscuring letters.
No other eReader has this problem.
The creator of an EPUB, in order to avoid this problem in ADE, has to add right margin (margin-right: 1em;) to the CSS to deal with a problem unique to ADE.
This seems like it would be simple to implement and would greatly improve the ADE experience.