I have a demo with to TabItem, switch TabItem change the MapView parent, if switching very quick the map will be disapear will be blank, the demo is attached, our project change the MapView like this demo have the same issue.
Thank you for providing us a repro sample. I was able to reproduce with v100.2.1, quickly switching tabs would sometimes not redraw the map. However this appears fixed with latest dev build for v100.3.
