I have several programs - for example iTunes and Git Extensions - that have what appears to be custom UI that displays when I hover their icon in the taskbar. For iTunes it's just the play/pause button and the forward and back buttons. For git extensions it's buttons to push and pull the current repo.
Sometimes, though, it just shows a tiny text tooltip with just the name of the program in it. And for a while now that's all I get.
I'm not sure if it's a setting I messed around with at some point, but it seemed inconsistent when it was working.
Is there a way to always get the intended 'custom UI' to display on hover?