Put several Pie charts in a StackPanel and set the WidthRequest and HeightRequest to let's say 60. You will notice that the circular pie itlsef appears much smaller than the expected 60. In Android and Windows Phone it appears as expected.

Add the ability to render points outside of the plot area when the data point value exceeds the explicitly set Min or Max values of the horizontal axis.

On Android and iOS, the line series will continue to extend off the plot area to a point that isn't rendered. Here's a screenshot, notice the line coming in from the left side of the plot area: https://www.telerik.com/clientsfiles/77e02115-6de0-4dd0-b572-5d5bc17a59b9_xamarin.jpg

On UWP, the beginning of the line series only starts on the first plot-able point. Here's a screenshot, notice the start of the line series: https://www.telerik.com/clientsfiles/d8c342e3-608b-40eb-95eb-8bd5e0dbc2e6_uwp.jpg 

If you have a Chart with BarSeries and TooltipBehavior defined, the tooltip of each bar is shown only when the user taps in the area around the tip of the bar.

The expected behavior is the tooltip to be displayed when clicking anywhere on the bar.

If you have BarSeries with CombineMode set to "Stack" with zero values, the bars are placed to the maximum of the y-axis. 
As a work-around, you would need to manually adjust the Maximum value of the vertical axis.

If we have a Chart with combined barseries and lineseries, and the lineseries is added first, the bars are misaligned - they are not placed in the center of the axis label on Android.

As a workaround, make sure to add first the barseries, then the lineseries.

If the series is added after the page constructor, the vertical axis labels are not shown.

As a workaround, create the series in the constructor and set its ItemsSource at a later stage.

Series labels are not displayed for horizontal BarSeries in UWP.