SOLVED: PXE-Boot issue

Dear listmembers,
when booting gparted (0.30 from last October, the version prior to this behaves identical) from PXE, I end up with the following message on the left top corner of a text - screen:

Debian GNU/Linux buster/sid debian tty1
debian login: --noclear (automatic login)

flashing every say 5 seconds.

The boot - commandline on the PXE - server looks as follows:

# boot gparted
label gparted
   menu label GParted Live 0.30
   kernel gparted/vmlinuz
   append initrd=gparted/initrd.img boot=live union=overlay config locales=de_DE.UTF-8 keyboard-layouts=de gl_batch genoswap noprompt  vga=788 fetch=tftp://192.168.0.1/gparted/filesystem.squashfs

Now, if I remove the "gl_batch" from the commandline and press "2" at the end of the boot process to enter a shell, I get the shell. After that, I can type "startx", X11 is starting flawlessly and a right click on the mouse brings up a menu where I can start gparted from. So, I basically got what I needed, however, for a not knowledgeable person this might lead to problems.

Therefore I would kindly ask whether someone has an idea what could have gone wrong and whether or not I can test something in order to help solve this issue - without knowing I had had expected gparted to start without user interaction. However, I have to admit that I did not try anything but the PXE-boot variant as my Laptop I requrired it for only boots from PXE for several reasons.

Thank you very much in advance
regards

Dieter Jurzitza