When a window is given the focus the tab bar highlights that tab. If the tab bar isn't wide enough to display all tabs it slides over to the new tab. However this slide behavior only works for selecting currently open document windows (e.g.: CTRL+Tab), it does not work for newly opened documents. In the photo below (.png attachment) I just opened Slider.py and the currently open tab (circled) is not visible. If I CTRL+Tab away from the window, then back to it, I get the tab.
