Hi Achmad,
We have checked the reported query “SFListView item gone when change ItemTemplate Inside SFTabView ” from our end with our sample. In the sample we have changed the item template of the SfListView in the button click. Unfortunately, We could not replicate the issue form our end. For your reference, we have attached the ensured sample and you can download it from the below link.
Could you please check with the above sample?. If the issue still replicates, we suggest you to modify the above sample if possible and share additional information’s such as data model, view model and XAML page where the issue replicates which would highly help us to analyze the issue better and update you an appropriate solution.
Please let us know if you require further assistance.
Regards,
Rawoof M.