Yes, leaving the conversation window open for a while will guarantee logging of all chats, but I tend to try to keep my taskbar clear as much as possible so I tend to type a message then immediately hit escape to close the window - it's now habit. (Yes, I know of tabbed chatting, as well as grouped taskbar items, but do not wish to use either). It's not a matter of simply avoiding the bug - that's more than possible by keeping open the window - it's a case of trying to fix the bug so we don't have to avoid it. Unfortunately, I think the powers that be (Patchou, etc) have gone AWOL or simply have no idea about this one.