**Steps to reproduce**
# Try CirrusSearch keyword `intitle:/regex/` on any wiki from the following list (either using web UI or API, I used Pywikibot):
* wikipedia:be-tarask
* wikipedia:cbk-zam
* wikipedia:map-bms
* wikipedia:roa-tara
* wikipedia:sh
* wiktionary:sh
* wiktionary:shy
* wikibooks:simple
* wikiquote:simple
* wikisource:zh-min-nan
**Expected behavior**
CirrusSearch should IMO work on all WMF non-private wikis (if not opt-outed by that particular wiki community).
**Current behavior**
On all of these CirrusSearch throws error like this:
```WARNING: API error cirrussearch-backend-error: We could not complete your search due to a temporary problem. Please try again later.```
or this:
```Dogodila se pogreška prilikom pretraživanja: Nismo mogli završiti pretragu zbog privremenog problema. Pokušajte ponovo kasnije. ```
I am not really sure if these wikis have CirrusSearch disabled or some bug occurs. Maybe some have this disabled and some are bugged?