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.
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.