To be confirmed: the Graph result view on Wikidata Query Service used to allow expanding nodes when clicking on them, now it's not confirmed anymore.
Example: this query
Expected result: when clicking on any node, it would expand to show the other statements related to that QID
Current result: when clicking on a node, it doesn't expand
Issue reported by @Fuzheado on Telegram
Strange… we haven’t touched that code in a long time (last commits to wikibase/queryService/ui/resultBrowser/GraphResultBrowser* in summer of 2018). And when I check out a commit from May 2018, I can still reproduce the issue. So I guess this must have changed due to differences in dependencies. (Back in 2018, we did not commit the package-lock.json yet, so checking out that commit today and running npm ci probably gives me modern dependencies.)
But if I check out the earliest commit with a valid package-lock.json, reinstall dependencies as of that time, and try again, the graph nodes still don’t expand. So I think it must have broken before September 2019.
Side note, this query is more convenient for testing – the original one uses named subqueries, which produce some unrelated errors in the console.
Aaaah! It’s due to T235540: StackOverflowError when SPARQL query uses same variable name before and after aggregation. The query service returns an error and it’s not logged anywhere, so you only notice if you look at the network panel.
Change 576872 had a related patch set uploaded (by Lucas Werkmeister (WMDE); owner: Lucas Werkmeister (WMDE)):
[wikidata/query/gui@master] Work around query service bug for (?x AS ?x)
https://gerrit.wikimedia.org/r/576879 and https://gerrit.wikimedia.org/r/576880 are not directly related to this task, but fix the errors being swallowed silently, at least a little bit.
Change 576872 merged by jenkins-bot:
[wikidata/query/gui@master] Work around query service bug for (?x AS ?x)
Change 593520 had a related patch set uploaded (by Lucas Werkmeister (WMDE); owner: Lucas Werkmeister (WMDE)):
[wikidata/query/gui-deploy@production] Merging from 5546deb8f12e0b3ef2d6f5dbfb28e76f15a92fd7:
Change 594442 had a related patch set uploaded (by Lucas Werkmeister (WMDE); owner: Lucas Werkmeister (WMDE)):
[wikidata/query/gui-deploy@production] Merging from 8aded016c8b9d376c7defbbb33684cd57b50c604:
Change 593520 abandoned by Lucas Werkmeister (WMDE):
Merging from 5546deb8f12e0b3ef2d6f5dbfb28e76f15a92fd7:
Reason:
Superseded by Id1fe3fce30.
Change 594442 merged by Gehel:
[wikidata/query/gui-deploy@production] Merging from 8aded016c8b9d376c7defbbb33684cd57b50c604: