text surface fade_in and fade_out?

[wizard_wizzle (aka ZeldaHistorian)]

When I create a text surface, I can draw it near a custom entity by using draw_visual from on_post_draw, but when I try to apply a fade_in or fade_out to that surface (which the api says is general to all drawables) it doesn't seem to do anything. Is this a bug? Has anyone else tried this and succeeded?

[MetalZelda]

You still can draw the text on a clean surface, it should work.
I never succeeded to fade a text surface, no idea why