<p>I do not have enough reputation to make my own edits.
When I try to make an edit, e.g., to a title to clarify it, I get an error that I haven't made a change of at least six characters.</p>

<p>It seems that this calculation is only happening to the body of the message and not to the title box, so this seems to be a <strong>bug</strong>.</p>

<p>The work-around I've used is to arbitrary add enough spaces at the end of a paragraph in the actual post. Interestingly, this is enough to fool the character-limit calculation.</p>

<p><strong>Update</strong>: @waffles tests provided enough of a controlled experiment to pinpoint the problem. In the examples where I was getting an error, I was making large changes to the title and also making, e.g., a one-letter typo correction to the body. The small edit to the body overrode the fact I had made a change to the title. If titles are to be edited more freely, my opinion is that this should hold regardless of any edits to the body.</p>
