Hi Isabel,
Thank you contacting Syncfusion support.
We have already found and fixed this mentioned issue “DataGrid is flickering while scrolling horizontally and DataGrid backGround color is updated in row while scrolling vertically (Touch scroll)” in Xamarin.Forms. This issue fix will be included in our upcoming 2019 volume 1 betta release which is expected to be available by this week March, 2019. We appreciate your patience until then.
Regards,
Subburaj Pandian V