WinGetTitle broken in python3

[kiboost]

Hi,

I'm using this code for years in python 2.7 x64 and it works fine:

from win32com.client import Dispatch # AutoIt python binding
autoit = Dispatch("AutoItX3.Control")

if autoit.WinExists("[CLASS:#32770]")
    title = autoit.WinGetTitle("[CLASS:#32770]")

Now, with python 3.6 x64, WinExists find the class, but WinGetTitle just return an empty string.

If I pass a string title (not [CLASS:...], WinGetTitle return a correct title string

Am I missing something ?

Thanks