Thanks for your answer, this work well with standard UMG buttons. I forgot to mention that I use “Common UI plugin” that use CommonButtonStyle for states styles . My buttons reference that style sheet and I do have a style with a tint of (1.0,1.0,1.0,1.0) for my Disabled state . But I still got a greyed out effect.
So maybe it’s an issue more related to CommonUI itself