well also me, and i just switched our “module” to work from the last source. I believe it must make an assumption regarding sdl and the mouse grab function. i will look into it, but please open a ticket on github so it doesn’t get lost.
In the main DosBox screen, in your Duke’s folder, execute “setmain” or “setup”.
Then select the 3d line, “Controller Setup”, then “Choose Controller type” and finally select “Keyboard and Mouse”.