label justify doesnt work for buttons

[TheNumenorean]

Neither left nor right justify appear to work for button labels. I cannot find a reason for it.

https://github.com/PistonDevelopers/conrod/blob/d3b8242c8c4a21d1553f652d9e1fe36d510d4103/src/widget/button.rs#L426

[pedrocr]

I see the same issue on my app

[icewind1991]

Add a .label_x(Relative::Place(Place::Start(None))) to the button makes things work