To recreate : 1. Have an authority that starts with a number. Exemple : uniform title, 1000 feuilles 2. Create or modify a bibliographic record 3. In the tag editor (wether it's in tag 130, 630, 730, 830 the result is the same), search for the authority 1000 feuilles. The result is the same with any of the field (Search main heading ($a) only, Search main heading, Search all headings or Search entire record) 4. We obtain No results found. 5. Erase the number 1000 and keep feuilles only, we obtain the authority 1000 feuilles. Same goes with other authorities, such as meeting name, person name or corporate name, not only uniform title. When we search in Authorities, we can find the authority with any of the indexes.
It seems to work for me on master. Did you try on a sandbox?
Hi Jonathan, It seems it was a bug specific to our Koha branch. It's currently being fixed by one of our partner. Thank you.