Revisions Log in bbPress Topics

I am not going to worry too much about this but I would like to understand things abit more.

Since removing all “revisions” from my site it has also removed all the change log history for bbPress topics. I don’t mind as such but was not expecting the forum changelog for topics to be affected.

I don’t think bbPress or WordPress makes autosaves of the topic/reply but I could be wrong. Anyway, it might be worth mentioning somewhere that this change log will vanish per forum topic. Or make it optional.