This is happening more frequently in the past couple of days. When I log in on the Linden viewer, I find myself inworld. I can see group notices, my inventory, local chat window, friends list, and SURL location bar. But I can't see my inworld surroundings because it's stuck on the login screen. The login screen didn't go away when I teleported to another sim/region. My alts have experienced this bug too. Screenshot is enclosed.