I agree; I wish JIRA did this. I actually asked for this feature in their support forum yers ago and got a chorus of "that's stupid, why would anyone want that?" in reply.
Want to middle click this one specific link to open it in a background tab? Instead of respecting default browser behavior the user is expecting, JIRA happily hijacks the mouse down event to open your background link in the foreground instead, which prevents you from opening multiple links in a convenient timely manor.
A deployment happened on December 29th. It's January 2th. Suddenly, you need to know if the deployment happened 1 week ago or 1 month ago. You remember the deployments page usually says useful information such as X days ago or X weeks ago. Based on the facts, a rational normal person is expecting something like 4 days ago. JIRA says "last year".