I see this thread was started in 2017, but you replied in Feb. Did you get your problem figured out?
I know that some of the content bin filter issues have been fixed in recent updates, but I’m up-to-date on 2019, yet I’m having an issue. It use to be that if I log clips in the metadata that anything with the key word, such as “pool” for example, would come up if I search for that in the Filter Content Bin. But it’s not doing that. It will only filter what’s in the name of the clip.