1. Can't reproduce that here.
2. From reading what you posted on the dutch forums i understand what you mean here. You mean it doesn't autoswitch to the conversation in wich a message was received. On that one i can tell you this has been taken out for a reason. See
Tabbed Chats - wrong contact, you will also find a script there that will do that if you really really want that behaviour back after reading the reasons it was taken out.