followTouchMove property
Whether the tooltip should update as the finger moves on a touch
device. If this is true and chart.panning is
set,followTouchMove will take over one-finger touches, so the user
needs to use two fingers for zooming and panning.
Note the difference to followPointer that
only defines the position of the tooltip. If followPointer is
false in for example a column series, the tooltip will show above or
below the column, but as followTouchMove is true, the tooltip will
jump from column to column as the user swipes across the plot area.
API Docs: https://api.highcharts.com/highcharts/tooltip.followTouchMove
Implementation
bool? followTouchMove;