User blog comment:Sarah Manley/New Editor Scheduled for Sitewide Release/@comment-1514297-20110909140318

A wee bug which was occasionally there before the update but seems more common now. If you edit a previously published line ending in a link in Visual mode, you cannot place the cursor beyond the link. The cursor turns red or blue and anything you type then becomes part of the link. Looking at source mode to see what is happening, then the line will originally show blah blah blah link Then if you just start adding text in visual mode for example the letter H and return to source, you will see blah blah blah linkH Stuart

btw you will need to switch to Source mode to see what I mean fully! What it does is have the two open square brackets, the word link, a vertical divider, the word linkH then the close square brackets.