[Bug 47507] New: Regression: can' t return to full-screen Civilization IV BTS window after Alt+Tab-ing to desktop since wine 4.10

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=47507

            Bug ID: 47507
           Summary: Regression: can't return to full-screen Civilization
                    IV BTS window after Alt+Tab-ing to desktop since wine
                    4.10
           Product: Wine
           Version: 4.12.1
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: igorkuo at meta.ua
      Distribution: ---

Steps to reproduce:
1. Run Civilization IV Beyond the Sword in full-screen mode and load a saved
game.
2. Alt+Tab to another window.
3. Alt+Tab back to the Civilization window or click on the game window button.
4. Expected results (which actually happen with wine 4.9, 4.9-staging, 4.6 and
many earlier versions): after a couple of seconds the game window becomes
visible and works as if no window switching has occurred.
5. Actual results (which happen with wine 4.10, 4.10-staging, 4.11, 4.12,
4.12.1): even after minutes of waiting the game window is still hidden. The
only thing the user can do about this is exit the game by closing its window
from desktop.

System information: Manjaro 64-bit with latest updates. The regression affects
both 32-bit and 64-bit wine prefixes. I'm using the native msxml3 version
installed via winetricks, because without it the game crashes while loading a
saved game. The issue happens both with built-in and native directx9. The
regression affects both Xfce and KDE Plasma 5 desktop environments.

There is no meaningful difference (other than error message ordering,
addresses) between wine 4.9 and 4.10 debug outputs (compared via Meld) while
the bug is being reproduced.

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