I just posted a reply on a topic where I quoted the post I was replying to. Then I found out that user "system" removed the quote without asking or even confirming, which meant in turn that I needed to add the quote again.
Is this a bug, or intentional behavior? If it's the latter, at least make the setting alterable. It is highly undesirable for a piece of non-intelligent software to unilaterally change posts in any topic.