Garageband doesn't open/respond after updating to Sonoma 14.1.1

I use Garageband on a daily base. After updating to Sonoma 14.1.1 my Garageband is broken (and also my musician-heart).

When I try to open Garageband, I see (sometimes) a short Garagabond-loading screen image.

After that, Garageband freezes and I can't use the top bar menu items. I can right-click on the app-icon in the dock and try to open a file, and sometimes that works, so when I press the play button (spacebar) some recorder music will be heard..

But I don't see the Garageband-screen. So it is somewhere, but where? The weirdest thing is, when I connect a second screen, sometimes Garageband appears on that connected screen? And then when I want to use it, it freezes again after some minutes.

I have a Scarlett Focusrite 2i2 3rd Gen Audo Interface connected to my MacBook Pro. I tried both options > connected and not connected when starting Garageband, but it doesn't make any difference.

Somebody does have the solution to fix this?