https://bugs.winehq.org/show_bug.cgi?id=49933
--- Comment #39 from rtentser@yandex.ru --- 7.16, seems to work for me. Still can't get window up by clicking on icon after minimizing installer, but alt+tab works in that case too.
I've installed something recently and remember to stuck because of minimizing, so it probably was fixed not so long ago. Maybe not a wine fix if it's still can be reproduced with 7.16. I'm using Manjaro KDE, about a week ago there was a massive update, maybe some lib fixed something.