UE4 UMG : How to display the curve on the Timeline Animation?

Hello guys,

as you can see on the next screenshot, the curves are directly displayed on the timeline window, without have to open the curves editor: (UE4 4.17)

on my editor (UE4 4.27.2) I’m unable to display them, even if I edited my curves. To see my curve(s), I have to open the Sequencer Curves window:

How can I activate the option to be able to see my curves directly on the timeline window?