Steps to replicate the issue (include links if applicable):
- Search for insource:/"u.a."/ in any WMF wiki, e.g. in www.mediawiki.org.
What happens?:
- "There were no results matching the query." is displayed
What should have happened instead?:
Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
1.45.0-wmf.9 - WMF wikis as of 2025-07-10. Seems to have started in the last couple of days.
Other information (browser name/version, screenshots, etc.):
After further testing it seems that the exact string regex search works if the search term does not contain dots, e.g. searching for insource:/"thumb|"/ works fine. Also normal regex searches, e.g.
for insource:/u\.a\./ work fine.