Sorry, now that I see the e-mail notification I got, I think this is higher priority than "minor." The entire text of the issue appears twice in the message, almost completely obscuring the one line at the bottom describing the change in assignment.
BTW that 'content change' notification is pretty useless in any case; that probably warrants a separate issue.
When I click 'Edit Issue,' there is one form, called 'issue-form' which contains the following inputs: title, content, responsible, kind, priority, component, milestone. In order to change any of those metadata items, I end up submitting the entire form. Every time I have done this, it says that I also 'edited content,' so either it doesn't check to see if a change was actually made, or there's something subtle that makes it think a change was made even if there wasn't. Could it be an encoding (i.e. utf-8 vs ascii) issue or CR/LF differences?