Wikimedia Bugzilla is closed!

The lines in the list of sections on Special:Allpages currently consist of three 
separate td elements, each containing a link to the same url. The cellspacing/
cellpadding is not defined for the table containing the sections, causing the 
underlining to break, creating a look that is probably confusing (the links appear to 
point to the articles on each side, not to a page containing a list of pages from 
article A to article B).

A quick solution would be to add a class attribute to the table in question, so we could 
for instance add

table.allpageslist {border-spacing: 0px;}
table.allpageslist td {padding: 0}

to the site CSS and thus remove the unnecessary spacing, without risking the possibility 
of breaking other projects.

I'll attach a patch that does this.