Hi
long time ago …
Haven’t used Python for Unreal for a while now. But I noticed, that there is now a new description for the function and it takes 2 arguments now (not sure if this is new or if it was not documented in 2018)
This is the new function
unreal.parent_external_window_to_slate(external_window, parent_search_method=SlateParentWindowSearchMethod.ACTIVE_WINDOW)
I don’t have a proper setup for testing right now, but maybe it will work with the MAIN_WINDOW as second argument?
All best