When the child component calls the parent component's state, the state of isIntersecting is reset

[condorheroblog]

This link can be used to reproduce the scene: https://codesandbox.io/p/sandbox/isintersecting-is-reset-2xgfm3?file=%2Fsrc%2Findex.tsx%3A31%2C18

I updated the state of the parent component through the handleSetNum function in the child component.

Print the value of entry?.isIntersecting when scrolling, and its value first changes to true and then to false. I don't know why.

But if I don't use handleSetNum function everything is normal - one true.

[thebuilder]

You have multiple observers that update the same context state in a useEffect. You can only see two of the three, so you will have one that is false.

[condorheroblog]

I'm so sorry🤦‍♂️.

I forgot that there are three child components on my page.

Thank you.