In Deployment history, there are two buttons I use the "view details" which I can open in a new tab without leaving the list of deployments, and the "clone package" which I can't open in a new tab. I can workaround it easily (duplicate tabs, or first view details then clone from there), but it was disappointing that I have to.

I needed to re-deploy say 10 deployments into a different sandbox and so the clone package feature was amazingly useful, but this little nag prevented me from entering the blissful nirvana of wielding the perfect tool for the job at hand.