Why is the scrollbar not working in the canvas (tkinter)?

Question

I want the window frame to expand the whole canvas AND have a scrollbar. Now the scrollbar is there visually but is not working as a scrollbar.

root = Tk()

def onCanvasConfigure(e):
    my_canvas.configure(scrollregion = my_canvas.bbox("all")) #make the scrollfunction work
    my_canvas.itemconfig('window', height=(my_canvas.winfo_height()-100), width=(my_canvas.winfo_width()-100)) #set the frame window to canvas size


#Below code to add scrollbar to app. 
# Layers (root -> main_frame -> my_canvas -> window (frame))

# Create A Main Frame
main_frame = Frame(root)
main_frame.pack(fill=BOTH, expand=1)

# Create A Canvas
my_canvas = Canvas(main_frame)
my_canvas.pack(side=LEFT, fill=BOTH, expand=1)

# Add A Scrollbar To The Canvas
my_scrollbar = ttk.Scrollbar(main_frame, orient=VERTICAL, command=my_canvas.yview)
my_scrollbar.pack(side=RIGHT, fill=Y)

# Configure The Canvas
my_canvas.configure(yscrollcommand=my_scrollbar.set)


# Create ANOTHER Frame INSIDE the Canvas
window = Frame(my_canvas)

# Add that New frame To a Window In The Canvas
my_canvas.create_window((0,0), window=window, anchor="nw", tags="window")

my_canvas.bind("<Configure>", onCanvasConfigure)

See clip: https://jumpshare.com/v/TJlbWJac5d4rwp3DwnFw