Greetings from Syncfusion, based on the provided information, we suspect that list view is added in the tab view which is placed in the front layer of backdrop page. And facing interaction issue at the top edge of the front layer.
We would like to inform you that interactions at top region (up to RevealedHeight) of the front layer will be handled by backdrop control for swipe support to reveal or conceal the back layer.
You can resolve this by disabling swiping action for revealing/concealing back layer by setting false for EnableSwiping property of Frontlayer and using header icon for revealing/concealing back layer.
Please refer the below code snippet.
Code Snippet [XAML]
<!--Your code for list view here-->
If the provided solution doesn’t meet your requirement, kindly revert us back with more information to replicate your scenario along with code snippets or sample.