md-list-item: flex filler for secondary container breaks layout

[e-oz]

and it breaks layout.

Codepen: http://codepen.io/evgeniyoz/pen/pyaWoj?editors=1010
Chrome 50.0.2661.66 beta (64-bit),
Safari 9.1
Firefox 45.0.1

Screenshot:

[henrymana]

The codepen referenced on the material section (layout tips https://material.angularjs.org/latest/layout/tips) is also broken by the same or a similar issue.... http://codepen.io/team/AngularMaterial/pen/NxKBwW. Code based on the codepen works with 1.1.0-rc1 but broken after that. There is a "div flex" and a secondary item inserted when it shouldn't.