Thanks for contacting Syncfusion support.
We have checked the mentioned error in lower version android device, and we are unable to replicate mentioned error from our end. We have tested by adding appointments and swiping the calendar views to Forward and Backward. It is working fine as expected. We have prepared the sample for the same.
• Lenovo P1ma40- Android Version 5.1
• Moto E- Android version 4.4.4
Please check the above sample and let us know if you still facing the same issue? If not, please modify the sample based on your scenario and revert us back with the below details.
• Syncfusion and Xamarin.Forms update version
• Device configuration details
It will be helpful for us to check on it and provide you the solution at the earliest.