04 Dec 2020, 23:31
When you say "full width", what exactly do you mean? I agree the text-block area could be wider in many cases, but no human would want to read text on multiple lines at full width on large screens like the desktop in your screenshot. Optimal reading text width for humans is approximately the same as a book.
You could override the width with some custom CSS. However, I am releasing a new X3 update within a couple of weeks, with a redesigned popup, and the text block width has increased from 480 to 640 pixels. Perhaps wait a little until after the update, to see how it looks?