bug: Rules Text Contains/Does not contain, leaves cards out

http://deckbox.org/sets/464291?f=17Y29yYWw* (which is cards in my Inventory that contain Coral in their name) shows two cards. If you add
Rules Text Contains flying
or
Rules Text Does not contain flying
The result leaves Coral Merfolk out, either way.

Plated Seastrider behaves similarly, if you haven't already filtered it away.