Props passed via attribute on to child components disappear after render

[no-creative-name]

Describe the bug
I try to add a component B into component A inside its template and pass a prop from component A to component B. The prop then is available inside component B's script, but after component B is rendered, the attribute is not set on the component tag anymore. Thus, any attribute-based styling won't work.

To Reproduce
Steps to reproduce the behavior:

1. See description

Expected behavior
Props passed on as attributes from one component to another stay on the child's HTML tag.

Additional context
Can be temporarily fixed by re-setting the attribute inside of the rendered hook of the child.