https://bugs.winehq.org/show_bug.cgi?id=48732
--- Comment #12 from Béla Gyebrószki gyebro69@gmail.com --- (In reply to Gabriel Ivăncescu from comment #11)
Created attachment 66642 [details] Don't unparent the window, but clear the child style.
Can you please test this patch and tell me if it also solves the crash?
I confirm that this patch also fixes the problem for me.