Switch fvwm to click to focus. Afaics that eliminates most of the difference to how Windows behaves, but it won't change its inability to handle mode switches.
I think fvwm2's default SloppyFocus policy is so different from Windows', and also from other window managers (GNOME, KDE), that it does not make sense to run the tests in that configuration. The [TestBot uses ClickToFocus](https://wiki.winehq.org/Wine_TestBot_VMs#Unix_configuration) for that reason and to me the GitLab CI should too. That's moot if switching to another WM of course but if not it's a GitLab must-fix.
Yeah. I don't know why we didn't do this right from the beginning. Or apply any of the other accumulated knowledge from the TestBot, for that matter.