https://bugs.winehq.org/show_bug.cgi?id=40376
--- Comment #12 from winetest@luukku.com --- (In reply to plata from comment #11)
Not sure about the download. Usually you must login to download the Launcher. Therefore I wasn't sure if it's ok to publish the URL.
I guess you are experiencing #41258 now.
Could be. But are you still experiencing the black window? Could you take a screenshot?