https://bugs.winehq.org/show_bug.cgi?id=44895
--- Comment #3 from mail+wine@m-reimer.de --- I've added two screenshots. It is interesting, that the League client immediately detects a wrong password. I just changed the last character and hit "Login". The client then immediately tells me that my password is wrong.
Trying to login with the valid password immediately after that, again, results in a long "hang" (maybe some kind of timeout) and then I get the error message in the second screenshot.
So different servers/connections seem to be involved. And the League client already knows that my password is correct before the "hangup" happens.
All this does not happen with "real Windows" from exactly the same PC behind exactly the same router.