https://bugs.winehq.org/show_bug.cgi?id=43193
--- Comment #4 from Alan W. Irwin irwin@beluga.phys.uvic.ca --- Correction to the following statement in my initial report: "This is definitely a wine-staging bug because the equivalent experiment with vanilla wine-2.10 (obtained by purging winehq-staging and installing winehq-devel) had no troubles with that install page of the GUI (although the above "apartment" warnings were produced), but failed in other ways on the final page of that GUI."
Since making that statement I investigated further with vanilla wine-2.10 and at the 66 per cent mark on the download page of the GUI, there is a stack overflow error, and immediately on that error the GUI moves to the final page which generates additional stack overflow errors unless you uncheck the "launch msys2" box there. So the revised conclusion is that both vanilla wine and wine-staging encounter the same error at the 66 per mark, report that error in different ways, but the effect is the same if you respond to the staging error by killing bash.exe.