#### Bug, feature request, or proposal: Bug #### What is the expected behavior? Highlighter [md-ink-bar] should invalidate position on window resize #### What is the current behavior? Frozen [md-ink-bar]. Please see attached image. #### What are the steps to reproduce? 1. Browse [demo application](https://github.com/angular/material2/tree/master/src/demo-app) from material2 2. Navigate to tabs (Especially for Stretched Tabs section) 3. Resize browser #### Which versions of Angular, Material, OS, browsers are affected? According to up to date sources of [material2](https://github.com/angular/material2/tree/master/src/demo-app) #### Is there anything else we should know? 