At the moment, editing a Wikidata description triggers re-rendering of the summary and mobile-sections endpoints. This is correct, however the mobile-sections-lead endpoint returns the old WD data, and is hence not being purged.
I've added a Wikidata description to the article [[Illinois-class battleship]] about an hour ago, but the description still does not appear here:
whereas it does appear here:
I'm not sure this is resolved. I just made a minor edit to the same description, and it appears correctly in mobile-sections, but not updated in mobile-sections-lead
(changed "battleship" to "battleships")
Ok, this should be resolved now. There was an issue with the EventBus HTTP Proxy service rejecting certain RESTBase-emitted events (incidentally comprising mobile-sections purges). I have tried editing the description of the same item a couple of times and it seems to be working now. @Dbrant please confirm it works for you as well and if so, resolve the ticket. Thanks for reporting!
@Mdholloway Hm. So we have 2 queues in Change-Prop - one for main events and one for events derived from transcludes. The first one lags only about 50ms, the second one can lag significantly more. The wikidataEdit->mobileRerender rule is using the transclusions queue. Since you now have this feature with wikidata item editing and it's pretty important to have timely updates, I will move it to the primary queue.