Up until this morning, I had my yahoo.com account open in one tab, and my rocketmail.com account open in a different tab at the same time. I use both accounts. One is personal, the other is business. For some reason, starting this morning, if I open the yahoo.com account in one tab, then open the rocketmail.com account in a new tab, the original tab flips to the rocketmail account. I don't want that. I want BOTH accounts open AT THE SAME TIME. Which used to be possible. So to me it is obvious that there is some kind of bug introduced in some update that you should really be aware of so you can fix it.

Oh, and since I already signed in to my email, I shouldn't have to sign in again here. I'm sure you just missed that opportunity to streamline customer experience.