Just for a bit of background up until today/a couple of days ago (not sure when this happened) we had a setting in preferences to allow for opting in or out of publicly viewable edit history and it was opt-out by default. I’ve rarely seen any members here change it to opt-in.
I’m not sure if this was a Discourse inbox feature, or an extension that BB was using (I recall @codinghorror mentioning it was a community PR).
Anyway something definitely changed here, I’m just not sure what it was but I’m glad to see it doesn’t appear to have been intentional.