digikam without window title?

[fotografie]

Hello,

my digikam starts without the window bar and title.

Menuebar is available, but not the window? So it takes the whole screen
and I can't minimize it or move it.

How can I go back to the windows mode?

Using digikam 5.8.0.1 Linux 64-bit appimage.

Thanks for your help

Ulf

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