View Issue Page Stalker Bar does not resize when re-enlarging browser

Repro Steps

1. Open View Issue Page
2. Shrink Browser to small size
3. Scroll down View Issue Page
4. Resize Browser to a larger size

Error
Stalker bar does not expand as you resize browser to larger size

The stalker bar only resizes itself when you scroll back to top of View Issue Page.

Please see - http://screencast.com/t/nPwm1WDntEC9

This is unexpected behaviour as users expect UI elements on View Issue Page to be consistent in placement.