I'd seen the problem before that commit. No problem now... but regarding the EditRepresentation changs:
• if gray makes sense as a background here, maybe it should be the default everywhere? (Seems strange to do in only one place.)
• do you prefer the submit-changes and confirm-messaging at bottom? because I think a table approach could put it back to the top with desired textarea sizing.
(Related: I'm going to bring in Alex Osborne's syntax-highlighting contribution:
HER-2001. Pretty and helpful in highlighting syntax errors while typing.)