https://bugs.winehq.org/show_bug.cgi?id=37180
--- Comment #19 from AntiSol antisol+winehq@antisol.org --- Is that the correct version? Based on the filename it looks like that might be unrealed 2 rather than 3 (i.e it's for UT99 rather than UT2004), and the different versions of unrealed don't have the same issues. You should (IIRC) be able to double-check the version in help->about, and there might be a "2" or "3" included in the splash screen. This bug only occurs in 3.
If you see my comment at https://bugs.winehq.org/show_bug.cgi?id=37180#c7 there's info on getting a free copy of Postal 2 (same engine and editor) from Running With Scissors. If you email Jon @ RWS (see the mailing list post for email) he may still be willing to give you a free game key if you're willing to look into this. Note however that this was a couple of years ago and Jon and I were very underwhelmed by the response (we had one response who took his free game key and then we never heard another word from him), so it's possible he'll be less receptive now. Also don't reply to the mailing list thread, Jon won't see it, he unsubscribed after a few weeks.
If you have any trouble getting in touch with him let me know and I'll see if there's anything I can do.