Hi Erik,
Thank you for using Syncfusion products.
We have checked the reported query “TreeViewNode lost the ChildNodes” from our side. We would like to inform you that we are unable to reproduce the reported scenario at our side. Based on the information provided, we have tested our sample with Syncfusion v18.4.0.35 and Xamarin.Forms v5.0.0.1931 and attached the tested sample in the following link,
Please check our sample and let us know if you still facing the sample? If not, please modify our sample and revert us with the following details which would be helpful for us to check on it and provide you the solution as soon as possible,
- Share TreeView XAML
- Share Issue reproducing video
- Share device configuration details
- Share Syncfusion and Xamarin.Forms version
Lakshmi Natarajan