In Domain graph, when you click on green rect like /songs.xsd, next clicks on other elements won't reveal elements in left panel.
Looks like it changes some kind of "context" for next clicks. If I then click on root /api.raml, revealing works correctly.
My bad. Elements weren't revealed, because there was nothing to reveal in context of Domain.
Clicking on elements which contain data related to Domain reveals it.
In Domain graph, when you click on green rect like /songs.xsd, next clicks on other elements won't reveal elements in left panel. Looks like it changes some kind of "context" for next clicks. If I then click on root /api.raml, revealing works correctly.