Hi Siggi,
Thank you for contacting Syncfusion support.
We have checked the mentioned issue with Schedule, while changing the date using NavigateTo method and MoveToDate property header (Month and year) not changing in Xamarin Forms (Android) and we are unable to reproduce the issue from our side with our latest Essential Studio Volume 3 SP1, 2017 (Version 15.3.0.29) update. We have checked with the moving the dates dynamically using NavigateTo method to different dates backward, forward and current day with various configuration devices. Please find the below sample for the same.
If the given sample doesn’t meet your requirement, could you please revert to us by modifying the provided sample based on your scenario along with proper replication procedure to reproduce the issue, it will be helpful for us to check on it and provide you the solution.
Regards,
Subburaj Pandian V