Multiple online devices available in msnp15?

Hi. When we only had up to msn 7.5 and mercury msn was out, sometimes i was onñine in my phone, then open up the pc and when it logged in, everything went glitchy. Maybe msnp15 in wlm 8.x fixed that? Can someone tell?

All still glitchy, by my tests… it comes up sometimes with a group chat with someone im not group chatting or im chatting with myself.