Text in button doesn't get rerendered in react

Questions
1

Having this:

const [myText, setMyText] = useState()

setMyText('hello world')

setTimeout(() => setMyText('123123'), 3000)

return <Button>{myText}</Button>

The text won’t get updated when the content is re-rendered.
Why is this and how to fix?

2

You need to use useState and NOT useEffect for this

3

This is just a demonstration, I am using useState, my mistake. Edited.
There is problem with the button component and this also happens inside the Col components.

Don’t know why, can you check?

4

Create proper demo where it is not working using template from this thread How to ask a good question on forum