What's going on with the widths of descriptions in listings?

First we lose 42 pixels off the width of listing descriptions due to the padding and border of the container (something I queried and never had the courtesy of a response) despite a statement that nothing would change in that area with the update .

Now we seem to have lost the fixed width in viewports between 480px and 767px and gone to a width of 100%.

A bit of consistency in this area would be so nice. Every time the listing description area undergoes change it messes up some listings. You only have to look at the mess left behind following the change to a responsive layout when many descriptions written to work perfectly well under the old site would no longer fit on the screen and necessitated the need to sideways scroll descriptions. Due likely to the lack of the needed skills or the necessary incentive most were never fixed and the site started to look a bit of a mess in places. Each change only exacerbates the problem.