popoverTargetElement does not cross shadow boundaries

 The issue you're encountering with "popoverTargetElement does not cross shadow boundaries" is typically related to using web components that utilize Shadow DOM. Shadow DOM creates a scoped boundary for styling and encapsulates the content and styles within it. When you're working with a component that uses Shadow DOM, you may encounter limitations in how you can interact with elements inside and outside of the shadow boundary.


The `popoverTargetElement` not crossing shadow boundaries means that the element you are trying to target for your popover is not accessible from within the shadow DOM. To address this issue, consider the following solutions:


1. **Shadow DOM Slot**: If the component you're working with provides a slot for injecting content into the shadow DOM, you can use it to place an element inside the shadow DOM. This element can serve as your `popoverTargetElement`.


2. **Event Propagation**: If you need to interact with elements outside of the shadow DOM, you may need to set up event listeners on the element within the shadow DOM to trigger actions or show popovers on elements outside the shadow DOM.


3. **Custom Events**: Use custom events to communicate between the shadow DOM and the main DOM. When an action inside the shadow DOM should trigger a popover outside the shadow boundary, dispatch a custom event that the external code listens for.


4. **Global DOM References**: In some cases, you might maintain global references to specific elements outside the shadow DOM that you need to target for popovers. This, however, breaks encapsulation and is not a recommended practice in web components.


5. **Component Prop**: If you have control over the web component's code, consider adding a prop or attribute to the component that allows you to specify the target element for a popover. This prop can be used to select the desired `popoverTargetElement`.


6. **Component Modification**: Modify the web component to expose an API or event system that allows you to interact with elements outside the shadow DOM. This might require extending the component's functionality.


The specific approach to take depends on the design and implementation of the web component and how it handles interactions between the shadow DOM and the main DOM. You might need to work with the component's documentation or the developers of the component to address this issue effectively.

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