The detailed overview for the mod info in the main menu is using a RichTextWidget. However none of the formatting options it should support work.
\n, <br> / </br> / <br/>, <u> all of them don't work. Putting a <br> variant in the description string in the mod.cpp makes the parser stop there and cut off the rest of the description.
Please fix this so that we can have at least new lines in our mod descriptions.