1) Not sure why yours does that as this is not the norm so the problem is not Community Builders.
2) This one is JoomlaBoards normal way that it works. Again this is not a Community Builder problem but a component called JoomlaBoard. It is the forums software that is used on this site.
as for the other issue ...
After posting a message you need to return to it, because you need to see what you have posted. Isn't it apllicable to editing a message as well?
My only point was that this is not a CB issue, it is a JoomlaBoard problem. The same happens with or without CB. My suggestion would be to fill in a bug report to www.tsmf.net/