How to filter visitor log by action name? (no replies)

Hi guys,

I love the new segement feature in the visitor log, BUT for some reason I can't filter for a specific action name.

This is what I am trying to achieve:
I'd love to only see visits that triggered a specific action (p.e. called "SUBMIT").

This is what I tried (with no luck)
I applied a segment filter on "Event Action" "contains" "SUBMIT" and for some reason I get NO RESULTS, although there are a lot of visitors that have this action.

... any ideas what's going wrong?

Kind regards
Marcus