This looks like a common problem. Described using an example URL:
Note the "Found on" column is empty ie. the link presumably does not exist on any page on Enwiki.
However it does exist in the page 'Find Me in Paris', it was added by IABot at Line 383 in this diff:
https://en.wikipedia.org/w/index.php?title=Find_Me_in_Paris&diff=1000954480&oldid=996083308
The diff dates to January 17, 2021 which is enough time for IABot to have re-scanned the page.
Why is the "Found on" section empty? More examples on request.
(note today WaybackMedic deleted the link from the page due to it being made dark at Wayback)