tkinter touchscreen scrolling - button press makes unwanted scrolling

[nanok66]

Ok, I entirely commented out the on_press function and it seems to work fine.

Also I added some code to on_touch_scroll. Pushing the buttons now does not make the screen jump! But I cannot slowly scroll the screen, only can scroll with fast finger flicks now.

I guess I can live with that compromise (lost the ability to slow scroll). But there is another issue that persists - if my last touch was far from the newest touch, the screen will scroll a tiny amount towards the new touch. I would definitely like to know how to deactivate that effect.

 def on_touch_scroll(event):
            nowy = event.y_root
 
            sectionmoved = 11             # speed of scroll
            if nowy > (self.prevy + 20):    # to limit the minimum threshold to scroll
                event.delta = -sectionmoved
            elif nowy < (self.prevy - 20):  # to limit the minimum threshold to scroll
                event.delta = sectionmoved
            else:
                event.delta = 0
            self.prevy= nowy
 
            self.scrollposition += event.delta
            canvas.yview_moveto(self.scrollposition/ self.canvasheight)