Last modified: 2006-08-10 20:08:38 UTC
When a thumbnail overlaps the first section heading, the heading's horizontal line runs up to the edge of the thumbnail. This looks ugly. When a thumbnail overlaps any other heading, the heading's horizontal line is truncated a few pixels short of the thumbnail. This looks neat. An example of this can be seen at http://en.wikipedia.org/wiki/Ockbrook where the horizontal line of the "History" section heading is overlapped by the locator map thumbnail.
I'm not clear on what the problem is. The line runs up to the thumbnail's containing box, yes, as it's supposed to. What is it you want it to do? It doesn't run up to the image or anything. (Permanent link to revision in question: <http://en.wikipedia.org/w/index.php?title=Ockbrook&oldid=54334779>.)
Well, if you look at the second and subsequent pictures, you will notice that the lines stop about half a centimeter short of the box. And when there are no pictures, the lines stop about half a centimeter short of the edge of the window. This half a centimeter short behaviour seems to be the more elegant and consistent. The inconsistency (bug?) is that the very first line on any(?) page runs all the way up to the image box or window edge.
The reason it doesn't run all the way up to floated images is because those have thick opaque borders set to the background color. Whether a user-created template does or does not have such borders is beyond the control of the developers; people are allowed to style templates however they want. I couldn't figure out how to style the template correctly within five minutes or so, but it shouldn't be hard (assuming you know CSS).