[Bug 44084] Simple WPF/.Net app doesn`t start

https://bugs.winehq.org/show_bug.cgi?id=44084

--- Comment #9 from Fabian Maurer  ---
Created attachment 59802
  --> https://bugs.winehq.org/attachment.cgi?id=59802
+relay logs

+relay log seems to show something here:

broken:
> 0009:Call KERNEL32.lstrlenW(001ab5f0 L"WpfSimpleTestApp.resources, Version=1.0.0.0, Culture=en, PublicKeyToken=null") ret=7917c299

good:
> 0009:Call KERNEL32.lstrlenW(001ac460 L"WpfSimpleTestApp.resources, Version=1.0.0.0, Culture=en-US, PublicKeyToken=null") ret=7917c299

We seem to get "en" when we should get "en-US", this could lead to an endless
loop.