[Python] Scroll and Scatter scale

My problem: In this script the do_translation is working. The do_scale does not work. The scrolling and scale interfere with each other. If I change the ‘do_scroll_y’ to False the do_scale works fine, but of course the scroll doesn’t. I have looked through all question about scrolling and Scatter, but did not find any question with the same problem. I have used AI Copilot for help and CoPilot changes the Scroll to ‘PinchScrollView’ and the Scatter widget to ‘Pinch to Zoom’, with the same results. To keep the code short I have removed those solutions. Can you help?

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.lang import Builder
from kivy.uix.button import Button
from kivy.uix.image import Image
from kivy.uix.widget import Widget
from kivy.uix.gridlayout import GridLayout
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.properties import ObjectProperty
from kivy.properties import StringProperty
#from kivy.uix.stencilview import StencilView
from kivy.uix.scatter import Scatter
import webbrowser
kv_text='''
<Image>:

<ScatterWidget>:
#do_rotation: False
#do_translation_y: False
#auto_bring_to_front: False

<MyScreenManager>:
HomeScreen:

<HomeScreen>:

ScrollView:
do_scroll_x:False
#do_scroll_y:False
size: root.width, root.height
size_hint_y:None
height:0


MGridLayout:
cols:1
rows:3
size_hint_y:None
height:self.minimum_height
row_default_height:1650
#row_force_default: False
spacing:'10dp'
padding: ['10dp','8dp']


StencilView:
id:stencil
ScatterWidget:
pos: stencil.pos
size: my_image.size
do_scale: True
do_rotation: False
#do_translation:False
auto_bring_to_front: False
AsyncImage:
id: my_image
size: stencil.width, stencil.height
source:'https://sybe3.github.io/assets/ww_1.jpg'
#fit_mode: 'contain'

StencilView:
id: stencil1
ScatterWidget:
pos: stencil1.pos
size: my_image1.size
do_scale: True
do_rotation: False
#do_translation:False
auto_bring_to_front: False
AsyncImage:
id: my_image1
size: stencil1.width, stencil1.height
#source: 'piccolo2.jpg'
source:'https://sybe3.github.io/assets/ww_1.jpg'
#fit_mode:'contain'

StencilView:
id: stencil2
ScatterWidget:
pos: stencil2.pos
size: my_image2.size
do_scale: True
#do_rotation: False
#do_translation:False
auto_bring_to_front: False
AsyncImage:
id: my_image2
size: stencil2.width, stencil2.height
#source: 'pizza.jpg'
source:'https://sybe3.github.io/assets/ww_1.jpg'
#fit_mode:'contain'


'''
class HomeScreen(Screen):
def __init__(self,**kwargs):
super(HomeScreen,self).__init__(**kwargs)

class MGridLayout(GridLayout):
pass


class ScatterWidget(Scatter):
source=StringProperty(None)
def __init__(self, **kwargs):
super().__init__(**kwargs)



class ImageWidget(Widget):
pass

class MyMenuApp(App):

def build(self):
return HomeScreen()

def main():
Builder.load_string(kv_text)
app = MyMenuApp()
app.run()

if __name__ == '__main__':
main()

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