The fix is easy but will need you to change a value in the anomaly/style/dock.css

At about line: 75 you should see this CSS mark-up...where you should change the value from width: 180px; to min-width: 200px; as indicated below.

/*

Docked Item Panel

-----------------------*/

#dockeditempanel {

    width: 180px;

    min-width: 200px;

    position: relative;

    z-index: 12000;

    left: 100%;

}

As this affects the sub-levels of the Navigation block tree it is necessary to have at least four levels or more, in the navigation menu before you can see any appreciable change in the width of the docked panel.But as each link is selected the panel should expand to allow the user to view them, which was not possible previously.

1. Test ALL CORE themes which have DOCK enabled
2. Dock Navigation block
3. Test to see if the docked content panel expands (width ways) as each sub-level is selected.
4. Repeat this in all notable browsers. Particularly the minimum supported versions of the browsers. (ie IE8 )