Several weeks ago, my windows started opening with two title bars. There’s a second bar underneath the MacOS title bar, with the same information as the title bar (name of current file and path to it). When I drag this bar, it drags the window. Right-clicking on it does nothing. I thought that maybe it was a way of bundling multiple windows (which would be useful), but attempting to drag a window onto another just moves the window.
What is the purpose of this bar, and how can I get rid of it? I’m asking here because neither Internet search nor search fo this forum turned up anything relevant. Thanks.