The system now removes the quotes from direct replies when they quote the whole previous post. It shouldn’t touch old posts unless they are rebaked.
And this new feature was improved about 3 hours ago. Can you update again and give it a try?
We added a site setting
remove_full_quote
which lets you disable that feature if you don’t like it. Also, the edits by system shouldn’t bump the topic to the top of the Latest topic list anymore.