http://bugs.winehq.org/show_bug.cgi?id=48006
--- Comment #60 from Andrew Church achurch+wine@achurch.org --- Confirmed that the 7.21 launcher is once again stuck on the splashscreen, with an msedgewebview2.exe task spinning at 100% CPU (doing nothing other than Sleep(0) from what WINEDEBUG=+relay shows, haven't dug deeper to figure out why).
Back to the drawing board, it seems...