title: I lost the button in my vscode terminal to expand to full-size and cover the editor window
body: <p>In my vscode there used to be an upwards-pointing caret in the upper right of the integrated terminal.  Clicking on it would toggle the terminal pane to be expanded and cover the editor pane above.  I used it frequently.  Now it is gone.  Is there some setting to make it re-appear or did someone decide it wasn't needed?</p>