Touch events does not work in a modally presented VC in iOS 13

[Sweeper777]

This is a similar issue to https://stackoverflow.com/questions/56718552/disable-gesture-to-pull-down-form-page-sheet-modal-presentation

The panning of the finger on the chart seems to interfere with the gesture recogniser responsible for dismissing the modally presented VC. Whenever the motion of my fingers starts to go a bit vertical, the VC starts to go downwards and the gesture recognisers on the chart all stop.