When changing the popup setting "appendTo" to a different element that has a wider width then the input of the dropdown multiselect is not working properly.
The dropdown is attached to that element but the styling is not changing to that parent and is just taking the width of it initial parent.

Example can be found here:

https://stackblitz.com/edit/react-wwhosr-awnrdm?file=app/main.jsx

When using the standalone popup control this is working as it should and adjusting it's width based on the parent it's appended to.