I have a NavController in a TabBar application. When I build for 3.0, it is adding a Toolbar to the bottom of the screen (just above the Tabs). I guess it's not hurting anything, but I don't really want it, or know how it got there.

This does NOT show up when I build for 2.0. Same behavior on both the simulator and devices.
Can anyone confirm that they're seeing the same thing, or offer insight to whether this is intended behavior change from 2->3?
Thank you.