Currently the status-bubble tooltip is simply <title>. It can't contain URLs or formatted text. We should redesign the tooltip so as to contain more relevant information including URLs and nicely formatted text. Note that the status-bubble is currently in an iframe. We would need to take it out of the iframe and integrate directly into the Bugzilla page.
<rdar://problem/55488678>
Also, we would probably want to make the tooltip iPad/iPhone friendly. Currently there is no way to see these tooltips on these devices.