This just started. With a new window and only one tab, I used to have a '+' on the right side of the window. But now it's gone and only reappears when I create a second tab (cmd-T or from the File menu). Anyone know how to get that + back?
It's strange that it disappeared, mine still has it when only one tab is open. How about this?: View > Show tab bar (or Command-Shift-T) is only available for windows with one tab open. Is that the problem?