I have uploaded a simple example app. It displays an sfChart that is bound to an Observable Collection. There is then a button that, each time you press it, adds a new random value and datetime pair to the observable collection. The chart is configured with a 5 minute scrolling window.
On Android, each time I press the button, the chart updates with that new value as expected. However, on iOS, it appears that the chart is only showing the last value, or perhaps the last 2 values. It basically draws a line from the beginning of the axis to the end of the axis as if there were only 2 points.
Is this a bug or is there something I am doing wrong to cause this behaviour difference?