https://bugs.winehq.org/show_bug.cgi?id=41710
--- Comment #5 from winetest@luukku.com --- I can confirm the bug.
I don't know if it has nothing to do with this bug but there was quite recent change in clipboard with this commit 761d244970dd189b1a639121e668a5089fd0112d. There is one bug open against it.
I don't know what caused it but I was once able to get a clear crash location. I tried to copy paste it from backtrace but for some reason it didnt get any output. The crash location reminded me of some clipboard bug that some function is unintiliazed and it crashes because of that.