there is a API named guiexists(), my opinion is provide another function:
widgetexists(), even better to combine these two functions to one API.

For widget exists, you can create a simple python function:

def WidgetExists (WindowName, ComponentName):
    for widget in getobjectlist (WindowName):

For widgetexists(), you can create a simple python function:

def WidgetExists (WindowName, ComponentName):
    for widget in getobjectlist (WindowName):
        if widget == ComponentName:
            return True
    return False

yes, that's a solution for verify if a window exists, but there is another situation, we need to verify if a window is visible or not, but getobjectlist returns all windows event it is invisible.

yes, that's a solution for verify if a widget exists.
there is another situation, we need to verify if a widget is visible or not, but getobjectlist returns all widget even it is invisible.

I think, now you can use getobjectsize, can you give a try and reopen this bug, if still it exist ?

Thanks