During Series animation, the stroke of the AreaSeries (area, splinearea, scatterarea, steparea) is not animated.
Hi Yang, The fix for the issue will be available in next LIB version (2018.2.604). It will also be included in our next official version – R2 2018 SP1, scheduled for the end of June. Best regards, Ralitsa Kumanova
Thank you for reporting this issue. We have changed it to 'Bug Report' and we have scheduled it for R2 2018 SP for June 2018.