Editing an issue should log both old/new values (BB-9711)
When you edit an issue's title the new comment automatically created is of a form:
<NAME> * changed title to <NEW TITLE>
The thing is, this makes sense for all but the first title edit, because the first title is essentially forever lost at that point. I think it should say
changed title **from** this way you'll have a complete history.
This may affect other fields.