Trying to make a window with invisible viewport.

[TeaCows]

I am trying to make a viewport functionally invisible by removing the top bar, and scaling and moving it with the main window. I got the scaling to work, but it glitches out when I try to scale it.

import dearpygui.dearpygui as dpg

def save_callback():
    print("Save Clicked")

def check_window_status(sender, app_data, user_data):
    if not dpg.is_item_shown("Example Window"):
        dpg.stop_dearpygui()

dpg.create_context()

with dpg.window(label="Example Window", tag="Example Window", on_close=check_window_status, pos=[0,0]):
    dpg.add_text("Hello world")
    dpg.add_button(label="Save", callback=save_callback)
    dpg.add_input_text(label="string")
    dpg.add_slider_float(label="float")

dpg.create_viewport(title='Minimal Viewport', decorated=False)
dpg.setup_dearpygui()
dpg.show_viewport()


while dpg.is_dearpygui_running() == True:
    
    dpg.set_viewport_height(dpg.get_item_rect_size("Example Window")[1])
    dpg.set_viewport_width(dpg.get_item_rect_size("Example Window")[0])
    dpg.set_viewport_pos([dpg.get_item_pos("Example Window")[0]+dpg.get_viewport_pos()[0],dpg.get_item_pos("Example Window")[1]+dpg.get_viewport_pos()[1]])
    '''
    if dpg.get_item_pos("Example Window") != [0,0]:
        dpg.set_item_pos("Example Window",[0,0])
    '''
    # Get the position of the window relative to the viewport
    window_pos = dpg.get_item_pos("Example Window")
    # Get the position of the viewport
    viewport_pos = dpg.get_viewport_pos()
    # Calculate the global position of the window
    global_window_pos = (window_pos[0] + viewport_pos[0], window_pos[1] + viewport_pos[1])
    print(f"Global Window Position: {global_window_pos}")

    #print(dpg.get_item_pos("Example Window"))
    #print(dpg.get_viewport_pos())
    dpg.render_dearpygui_frame()

dpg.destroy_context()