Noticed that on wikitech, lint errors hadn't refreshed after edits to pages to fix lint errors. @bd808 pointed out that changeprop is probably not enabled here. The temporary workaround was to open the edited page inside VE (which forces the page to be reparsed in Parsoid which then refreshes the lint errors), but this is not a realistic solution.
Which other wikis are impacted by this? We need to figure out a solution that works for these wikis.