Hello, my example code is here: https://jsfiddle.net/rs1j7tdy/2/
I am using the tooltip with outside: true and useHTML: true with custom pointFormat. The chart itself more or less takes up the entire vertical space of the screen. The tooltips at the top show up properly, and adjust positioning to appear within the screen. The tooltips at the bottom, however, such as the last one, Nov 1998, always show part of the tooltip off screen, sometimes up to half the tooltip. Is there a way to change this behavior? Thank you.