debian-installer Buster - Corrupt display after grub - where to report bug ?

[Fab Stz <fabstz-it@yahoo.fr>]

Hello,

I'm booting the latest weekly netinst iso to install Buster.
I'm facing corrupt display as soon as grub starts loading the kernel.
Grub's display is fine. https://pasteboard.co/Ijg1Hfb.jpg
The only workaround I found working is setting these parameters to the
kernel vga=794 or vga=791.

My System is ASUS Prime B450M-A with AMD Athlon 200GE CPU (with
integrated vega graphics), and no additional video card.

Towards which package should I report that issue ?

This is with the latest weekly netinst iso for buster (10/Jun/2019)
It also happened with the one of 27/May. I don't know if this is a
regression.

Regards