While using two inbuilt chat applications simultaneously (like that in gmail and facebook), if a new chat message comes in one of the site, i could no longer type into the current chat box. I mean the keys function on the web page as a whole and not on the text in chat. Like for example, if I use backspace key, it takes me to the last page rather than deleting what i was typing in the chat box. To correct this requires to minimize and reopen the chat or to reload the page. This has started happening quite recently. Please suggest.