Size_hint is doing weird things and being very inconsistent

Question

I've created 4 "indicator buttons" and I've given all of them the same size_hint values, but they don't have the same size when I launch the program. Additionally I've created "validate buttons" (which also share the same size_hint values) and again, when I launch the program, they don't have the same size. Did I miss something? How exactly does size_hint work? (the indicator buttons are the large squares on the top right corner of the picture)

---

 #indicators for the 1st row of buttons
    Button:
        id: i11
        pos_hint: {"x": 0.2, "y": 0.7}
        size_hint: 0.05, 0.065
        background_normal: ""
        background_color: root.colori11

    Button:
        id: i12
        pos_hint: {"x": 0.18, "y": 0.7}
        size_hint: 0.05, 0.065
        background_normal: ""
        background_color: root.colori12

    Button:
        id: i13
        pos_hint: {"x": 0.16, "y": 0.7}
        size_hint: 0.05, 0.065
        background_normal: ""
        background_color: root.colori13

    Button:
        id: i14
        pos_hint: {"x": 0.14, "y": 0.7}
        size_hint: 0.05, 0.065
        background_normal: ""
        background_color: root.colori14

#validate button
    Button:
        pos_hint: {"x": 0.66, "y": 0.725}
        size_hint: 0.05, 0.065
        text: "V"
        on_release:
            root.btn_action_v2()

---

picture of my program

Answer 1

I've done several Kivy layouts and have never once used pos_hint so my suggestion is to comment those away and see what result you get.

size_hint is a relative and so I have always used integers as I find those a bit easier to work with. Furthermore you have the option to use size_hint_x or size_hint_y individually