The problem:
https://en.wikisource.org/w/index.php?title=Special:LintErrors/misc-tidy-replacement-issues&namespace=0 identifed
https://en.wikisource.org/w/index.php?title=A_Welsh_Grammar,_Historical_and_Comparative/Phonology&action=edit&lintid=972656 As having a "div-span" flip issue.
However, the flagged portion of the page is a call to a PAGES tag to perform the transclusion. Whilst all the relevant Page: namespace pages linked could be checked indvidually, for some works this would result of a LOT of pages which do not have the detected error having to be unnecessarily checked, which is inefficient.
Desired behavior:
On wikis (like Wikisource) where Proofread pages is enabled, additional functionality, that reports the individual transcluded PAGE (via a PAGES tag or otherwise) that has caused the LintError detected. Reporting it in the same column that would be used for a LintError resulting from a template call or directly transcended page.