@andrzej.wojcik it seems this was changes in #issue #1029? As per 6.1 Recommended Rules :

A is eligible for carbons delivery if it does not contain a child element and if at least one of the following is true:

• it is of type "chat".
• it is of type "normal" and contains a element.
• it contains payload elements typically used in IM (Message Delivery Receipts (XEP-0184) [3], Chat State Notifications (XEP-0085) [4], Chat Markers (XEP-0333) [5]).
• it is of type "error" and it was sent in response to a that was eligible for carbons delivery.
• it matches the MUC-related rules outlined below.

I guess we should probably adjust tigase.xmpp.impl.MessageCarbons#shouldSendCarbons to include normal type of messages with body as well?

@wojtek Most likely we should. I do not recall if originally XEP stated that we should forward "normal" messages or if that was changed at some point.