tippy.setDefaultProps doesn't work on followCursor

[BabyDead]

        tippy.setDefaultProps(
                {
                    'appendTo': document.body,
                    'delay':   125,
                    'followCursor': 'initial',
                }
        );

        tippy('.passwordTooltip', {
            'content': "I'm a tippy tooltip",
            // 'followCursor': 'initial',
        });

The above example doesn't work.

Uncommenting the direct one works straight away, but setting the default seems to get ignored. The 'delay' property works fine, but the 'followCursor' property gets ignored entirely.