Is it on purpose that
- when an admin edits a comment (because of a simple spellchecking error for instance) nothing changes anywhere concerning the "last update": the comment keeps the same old date, and the last update of the topic remains unchanged.
- whereas when the admin edits the same kind of thing (or simply correct the subject because it was unclear) then the "last update" of the topic is immediately changed.
My preference, as admin, goes really to the first behaviour,
but both strategies are acceptable.
Nevertheless, having them acting differently (for topic and for comment) may be quite unclear.
But I'm just wondering if it's like that by design, or if it's just something not yet noticed... :-)