Hi Mark,
Thanks for contacting Syncfusion Support.
We suspect the problem is due to binding the value as zero. Can you please confirm this in your application?
Also, we have checked by using the given code snippet in the following device versions having Syncfusion NuGet version (17.2.0.46).
1) Android 7.0 version Lenovo device.
2) iOS XS 12. Version.
3) Windows 10 PRO 64 bit.
Still we are not able to replicate the issue at our end. So, we have attached the sample for your reference.
If you still face the problem, revert to us by modifying the sample. This will be helpful to investigate further.
Thanks,
Rachel.