I sometimes edit my old posts to correct a misspelling or a bad link. Is there any way to avoid to rise it at top once done. The alternate would be to not edit messages. But IMHO editing is a good thing in order to make the forum more awesome for future readers/searches.
Even after a week the post is promoted (doesn’t seems to be affected by times).
Edited the OP 16 days later, and it has NOT been moved up!
Is that 2 weeks a threshold?
It appears that only editing the last message of the thread bump the topic at front.
And since it is a Discourse feature, i guess that it can’t be easily changed.