Normally when we have a related list, when we hover our mouse to the clickable link, it'll display a pop up that will show a quick summary (or set of fields) of a record, as shown below:
But this doesn't seem to work with the Task related list, even if the compact layout is already set. (Imagine I'm hovering my mouse at one of the "Confirmation Call" link, but it doesn't show any pop up that would show its summary.)
Currently, I can't find any source that says that this isn't possible for Task. I would like to know if I'm missing any configuration that should be set?