https://bugs.winehq.org/show_bug.cgi?id=37180
--- Comment #7 from AntiSol antisol+winehq@antisol.org --- FYI, I am the Linux beta tester working with Running With Scissors to try to get this working for Postal 2's editor. See: https://www.winehq.org/pipermail/wine-devel/2015-August/108758.html
If you have the skills and you would like to dig into this for us, we're happy to give you access to a copy of the editor for free to help you debug the problem. Just reply here with your email address and I'll hook you up.
Thanks!