I tried the new Debian bookworm installer rc4 and i manually installed i3-wm. I started i3 from tty with startx command as user. to my surprise i found out that the xorg process is running as root. that can't be intentional, can it?
I have fixed the problem by adding the following line in /etc/X11/Xwrapper.config needs_root_rights = no After that xorg runs as user.