Somehow the 'View unread posts', 'Board Index', etc. width has been set to 'narrow', and they no longer expand to occupy the full width of my browser window.

This seems awkward to me, but then I'm an old curmudgeon.

I use wide browser windows, and I feel that viewing, for example, TubeNet's Unread Posts scrunched up to the left is
ugly. I like visual symmetry.
(This 'Posting' window occupies the full browser window width, thank goodness, as do many other areas. It seems to be the 'Board Index' and its child windows that are affected.)