If I ever cast Netflix, either through the browser or my N5, the next episode never plays when the episode I started finished. Instead, the profile selector is shown.
I don't have any problem when starting the episodes using the controller or remote app.
Using a Shield TV.
Yep it's buggy.
Another gripe: with Chromecast, playing the next episode usually skips opening logos, recaps & credits and gets straght to the new content - hooray! - but the Nexus Player app never does. Which takes some of the fun out of marathoning.