I'm bothered by the fact that, on forum home, the column with the "latest" and "xx minutes ago" information is fixed, while the column to the left, with the forum title, is not. Consequently, when you narrow the width of your browser, the forum name (which is more important) takes the hit, to to speak. Is there a way to devote less space to the "latest" column and more to the one that holds the names of forums? Thanks.
Have you changed the Responsive settings at all? That just doesn't look right compared to a default install. As you can tell in the screenshot below the last post info is hidden to the right and displays basic info under the node stats once the defined width is met. Last post info should be hidden before the node title wraps.
The lastpost area is fixed so it will remain that size. If your wanting things to adjust depending on the width of the browser = Enable Responsive. And use media query's adjusting/displaying/hiding elements to suit your needs.