Weird typeahead behavior for controlled vocabularies

[flaneuse]

In NIAID guide species controlled vocab: Typing "Homo" in the typeahead lookup correctly lists Homo sapiens somewhere in the list. Once you add a space, however, (e.g. "Homo s"), nothing is found.

I think this is a mapping issue; wildcard Elasticsearch queries break on spaces for keywords. I think you need to switch the ES mapping to an ngram tokenizer to be able to do partial searches with spaces. @juliamullen is implementing this behavior for outbreak's typeahead lookup if you need help setting it up.