Dropdown with scrollview doesn't scroll with kivy 1.10.1

[I.R.B.A.]

It works perfectly with kivy 1.9.1 but not with kivy==master or 1.10.1

Any help will be appreciated. Thank you!

code:

    DropDown:
        auto_width: False
        id: colors
        size: (root.width, 100)
        ScrollView:
            bar_width: 5
            do_scroll_y: False
            do_scroll_x: True
            height: 100
            size_hint_y: None
            GridLayout:
                id: colors_scroll
                rows: 1
                spacing: 0
                width: self.minimum_width
                size_hint: None, None
                30Buttons:
                    size_hint: None, None
                    size: 100,100

[I.R.B.A.]

Answered here