I try to a list of object for which I implement the __str__ method as asked by the documentation : https://docs.pysimplegui.com/en/latest/documentation/module/elements/combo/

import PySimpleGUIQt as sg

class ComboPoint:
    def __init__(self, location) -> None:
        self.location = location
    
    def __str__(self) -> str:
        return "something"

when I call:

window[key_name_combo].update(values=values_for_combo)

I should except to have the same value displayed many time but I have only empty lines (which means that at least behind object is viewed).

What I miss ?