Problem:
While trying to use the Bottom-bar item on the Reactive app, I've found it very not intuitive and I think it lacks either some functionality or a better explanation on the documentation page. It's really hard to figure out how to use it to get a sticky bottom bar like it's shown on the documentation.

Solution 1: 

Update documentation to also guide Reactive developers on the element usage. I guess in Mobile it comes out of the box, but I'm not sure. 

Solution 2: 

New Pattern for a Bottom bar that has parameters like - sticky to the bottom/top and placeholders for current Bottom-Bar-Item element.