These docs are for an old release.
Info on upgrading to v6
stickyFooterScrollbar
Whether to fix the view’s horizontal scrollbar to the bottom of the viewport while scrolling.
'auto' (the default), true, false
When a view has horizontal scrollbars, for example, timeline view or the daygrid or timegrid views when the (dayMinWidth) settings is activated, and calendar is within view but the scrollbars are below the fold of the screen, this setting will fix the scrollbar to the bottom of the viewport.
The default value of 'auto' will look at the height setting and if it is 'auto', meaning the calendar has the potential to be very tall, sticky-footer-scrollbars will be activated.
The following demos show sticky horizontal scrollbars: