[Koha] Elasticsearch authority sorting giving unexpected results

[Aleisha Amohia]

Hi all,

We have some unexpected sorting results happening when we search 
authority records. We are using Elasticsearch. Wondering if anyone has 
seen this before and knows a code fix or some Elasticsearch 
configuration required to fix it.

I've noticed this happens in upstream Koha too so might be a real bug, 
with Koha or Elasticsearch, I'm not sure which.

As an example, when we search for "political science" authorities with 
the 'heading ascending' sort order, these are the results:

 1. Political science Philosophy
 2. Political science Poetry
 3. Political science
 4. Political science Problems
 5. Political science Quotations

We would expect Political science (#3 in the above results list) to show 
first, before the others.

Any ideas?

-- 
*Aleisha Amohia (she/her)*
Koha Technical Lead
*Catalyst.Net Limited - Expert Open Source Solutions*

*Catalyst.Net Ltd - a Catalyst IT group company*
Tel: +64 4 499 2267 | www.catalyst.net.nz <http://www.catalyst.net.nz>

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