Why does python code only work sometimes?

Here is the code I was mentioning in the comments.

window = sg.Window('FIRST window', layout, finalize=True, print_event_values=True)

window.bring_to_front()

I've not been able to duplicate the problem, but then again, I've got no idea of the environment, the operating system the version numbers, etc. Many variables at play so it's the best I can do is give you the parm to finalize the window so you can make the bring to front call.

You could also schedule a timer to delay a little bit before trying to bring it to the front. Here's a version with a timer designed in:

import PySimpleGUI as sg


layout = [  [sg.Text('The First Window', font='_ 20')],
            [sg.Button('Go'), sg.Button('Exit')]  ]

window = sg.Window('FIRST window', layout, print_event_values=True, repeating_timer_ms=100)

while True:
    event, values = window.read()
    if event == sg.WIN_CLOSED or event == 'Exit':
        break
    elif event == sg.TIMER_KEY:
        window.timer_stop_all()
        window.bring_to_front()

window.close()

Maybe consider opening an issue so more data can be provided.

The problem was the code never got called on a new console. Rerunning it on the same console it still remembers to put the window on top. So my fix based on the question that showed my error from khelwood:

while True:  # Event Loop

    event, values = window.read(timeout=100)
    # window.TKroot.focus_force() # this wasn't even necessary nor the sleep
    if event == sg.WIN_CLOSED or event == 'Submit'or event == 'Doesn\'t exist':
        break
    raise_above_all(window.TKroot)

window.close()