I'm posting this on behalf of Altene who sent me a private message on Curseforge.

thank you for continuing to dev Prat 3.0 you are doing an incredible job. Do you know if it is possible or if it will be possible to anchor the chat window on the left edge of the screen in future versions?

Thanks in advance!

i have also this problem. i disabled all buttons of the chat with the button module, but the free space of the leftside buttons cant be removed. i tryed to move chat, with the blizzard edit mode, but the chat frame still shows the free space of the left side buttons.

Great! I'll close this out then

They fixed this with today's update.