"Click on Bar Segment" button does not appear after clicking on a cluster in cluster view

[ghost]

When you click on a node in cluster view, the "Click on bar segment to sort results by that topic" button does not appear after being redirected to the bar page. When you do click on a bar, however, the "Retrieve Documents for X" button DOES show up.

I've only tested this on Firefox, will update after testing on other browsers.