Hi Steve,
Thank you for using Syncfusion products.
We have checked the reported issue “Using Dataform inside the Tabview it crashes in UWP”. We are unable to reproduce the reported issue. We have created a sample for using SfDataForm inside the TabView. Please have the sample and let we know the reported issue is still reproduced or not.
If you have still facing the same issue means, please modify the sample to reproduce the issue and replication steps and stack trace which will be helpful in analyzing and provide you a better solution.
Please let us know if you have any other concern.
Regards,
Paul Anderson