https://bugs.winehq.org/show_bug.cgi?id=46441
--- Comment #4 from Olivier F. R. Dierick o.dierick@piezo-forte.be --- I tested with notepad alone : - There is no taskbar. - Minimizing notepad puts an icon with its label in the bottom right corner. - Notepad can be restored through the icon.
I tested Notepad + Steam: - Minimizing notepad doesn't display any icon. - While the taskbar is visible, one can restore notepad by clicking on the window button on the taskbar. - After closing Steam, the taskbar hides itself; - Notepad still doesn't minimize to an icon. - The only way to restore notepad is to launch taskmgr(or any app that puts an icon in the systray) in the same wineserver instance, and the taskbar will reappear.
I think there is more than one issue with the 'minimize to icon' handling.