My office uses Jira as bug tracking tool. Quick search option in Jira is really useful to peak into the bug details when you know the bug ID. In my perspective, the deterrent to this feature is, one has start the browser, navigate to the jira site and then do a quick search.
To simplify, I developed a small firefox extension through which you can enter the bug ID and it directly takes you to the bug page.
In the course of this, I got a few good links to firefox plugin development.
Firefox Extension Devlopment
XUL Controls - MDC
If you are interested in the extension, pls leave a comment.
Note: This extension is not generic enough to support all Jira deployments.