Color updating can't keep up

I have a set of custom buttons configured to change color on press and change back on release. However, when I started rapidly clicking on different buttons, some of them kept the “pressed” color, even though the touch event ended. To demonstrate, here is the expected behaviour and here is the actual behaviour This is the code:

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout

class ColorButton(Button):
    def on_press(self):
        self.color = (0, 1, 0, 1)
    def on_release(self):
        self.color = (1, 1, 1, 1)

class TestApp(App):
    def build(self):
        grid = BoxLayout()
        for i in range(10):
            grid.add_widget(ColorButton(text="test"))
        return grid

TestApp().run()

[dessant]

Btw, you can drag, just make sure to not drag outside the button bounds, or set always_release to True.

[dessant]

Yeah, probably that’s what they’ve been seeing. Let’s close this. 😋