Summary popovers on links
For most links in GitLab, we display a simple tooltip that shows the title of the linked object to the user.

We have an opportunity to make GitLab more lovable by enriching these tooltips. Users are interested in more than just the title of a milestone or issue; they want to understand the status of the object, who's involved, any action that might be required, and more.
Answering these questions currently requires clicking on the object, browsing away, and then hitting the back button to return to the user's original page. Information-rich popovers helps the user stay on their current page: fewer clicks, less context-switching, and a better user experience.
epic