I have just updated to the latest charts package (20.4.50) and the SpineAreaChart seems to have an issue. The area under the line is not shaded correctly anymore - instead the first and last point of the series are joined by a curved line and the area between the curved line and the spline series is filled?
Have you seen this issue before? See screenshow below.
YGYuvaraj Gajaraj Syncfusion Team February 21, 2023 01:58 PM UTC
We suspect that you have used nonlinear data source values, so we suggest you use the sortingOrderandsortFieldValueMapper properties to sort the data source values in ascending order and avoid connecting a start and end point of the SplineAreaSeries. We have shared the code snippet below for your reference.