New filter logic not working w/boolean field

[aleph-zero]

Kibana version: 5.5.0

Elasticsearch version: 5.5.0

Server OS version:

Browser version:10.12.5

Browser OS version:

Original install method (e.g. download page, yum, from source, etc.): tar.gz

Description of the problem including expected versus actual behavior:
Creating a new filter using the "Add Filter" dialogue box on the Discover page does not work with boolean fields. It allows you to choose the field and the predicate, but the last entry box for specifying what value you want to test does not show up, unless you choose predicate "is one of" or "is not one of". I suppose you could enter true/false here, but this is confusing and weird. The predicate list for a boolean field should only allow the "is" (possibly also "is not") predicate. And the next box that displays should not be a text input, but a drop-down with 2 values: true, false.