When the tracking columns get further across the screen and you right click on a column to edit/delete etc, the window with this option cannot be seen. It is there but stuck right at the beginning of the columns so you have to scroll back to the far left to see it, and then remember which column it relates to!

The pop up box with the options needs to move along to the right of the screen as the columns grow so that it can be seen and not stay static on the far left.