https://bugs.winehq.org/show_bug.cgi?id=56911
--- Comment #4 from Nikolay Sivov bunglehead@gmail.com --- I don't think we are using winforms code from Mono, so testing that is not useful. What is useful is to compare dotnet winforms 5+ behavior on windows with dotnet 4.x behavior, also on windows. For wine-mono we need to match 4.x.