Zotero Cannot Show Its Main Window

Windows 11, Zotero 7.0.15.

Symptom:
Click on zotero to launch. No window pops up. But the icon on the task bar shows that it has been launched.
Hovering on the task bar zotero icon, I can see it is loading, rendering the item list, which indicates that the program functions well.
https://s3.amazonaws.com/zotero.org/images/forums/u11185051/lgrfewml2qnjpfcsrkmd.png
But I cannot make the zotero window show up.

Methods I've tried:
1, Click on zotero icon on the task bar. Not effective.
2, Alt+Tab. A zotero window can be seen, but when I switched on it, no window shows up.
3, Close zotero by right click on the zotero icon on the task bar, then "close", and then relaunch. Not effective, the same thing happens again.
4, Win+Tab. CANNOT SEE THE ZOTERO WINDOW.
https://s3.amazonaws.com/zotero.org/images/forums/u11185051/y01rt2uli0bg8pdn9qst.jpg
5, Reboot my PC. Then launch zotero. Not effective.
6, Uninstall zotero, then reboot (necessary), then (re)install zotero, launch. Not effective, the same thing happens again.

Other information:
1, It seems that my zotero was just upgraded from 7.0.13 to 7.0.15 (I'm not sure, I don't know when did this happen). This bug was observed about 1 hour before I write this discussion. I think zotero works well before that (at least it does not trigger this bug).
2, I've been using the multi-desktop function of windows. Since the zotero window can be seen during alt+tab but invisible during win+tab, this might be relevant.
3, I know this bug may not be caused by zotero, but no other app shows this bug (as far as I know).
  • More information:
    The version is 7.0.15 x64.

    I have another laptop, and I've tested on it. Laptop: windows 11, zotero 7.0.15 x64. Zotero functions well.
    Even if I create a new desktop, drag zotero into it, then remove this desktop, zotero window is automatically moved to an existing desktop.

    By using "multiple desktop" I mean this button on the taskbar:
    https://s3.amazonaws.com/zotero.org/images/forums/u11185051/3t8m67k7igrpd4p805if.png
  • I've figure it out! It turns out to be the function of zotero that it RESUME AT THE WINDOW POSITION WHEN IT LEAVES.
    That's to say, some wierd thing happened when I use multi-desktop, and cause zotero to be out of our sight.
    Fortunately, there is a method to solve this:
    1, hover on the zotero icon on the task bar.
    2, hover on the thumbnail of zotero, click on "Move (移动 (M))".
    https://s3.amazonaws.com/zotero.org/images/forums/u11185051/59eoqjeopwf3yu0oncrd.png
    3, use up/down/left/right key to move it to somewhere visible.
    Problem solved.

    It's windows' fault that zotero window does not show on the win-tab page, otherwise I'll be able to drag that window to another.
    But it would be better if zotero can check its window position when launched, to avoid this circumstance. It would also be OK not to add this feature, since it's really not a common case, and solution exists as I showed above.
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