The DosBox applications do not quit directly.

I can exit but then the screen keeps black.
After round about 30 seconds the mouse cursor appears and the login screen comes up.

Is this a normal DosBox quit behaviour or can I change something so that I can get a quick directly application quit.

Looks like a solution
https://www.gog.com/forum/theme_hospital/fullscreen_and_crashing_problems_on_mac_mojave/post14

I have loaded the newest DOSBox version and put it beside the game on my desktop.
I renamed the dosbox executable in "SimCity".app/Contents/Resources/dosbox/dosbox to old_dosbox
and I used the following command to make a link to the new dosbox executable
ln /Users/USERNAME/Desktop/DosBox.app/Contents/MacOS/DOSBox /Users/USERNAME/Desktop/SimCity™\ 2000\ Special\ Edition.app/Contents/Resources/dosbox/dosbox