Menubar: Passthroug not working for the child elements

[CaptainException]

Describe the bug

Using passthrough I am able to style the Menubar itself but not any of its children. I tried both programmatic and declarative syntax and they behave the same.

This works:
:pt:root:style="'background-color: aquamarine'"
but this has no effect:
:pt:rootList:style="'background-color: red'"

Reproducer

https://stackblitz.com/edit/primevue-4-ts-vite-issue-template-m65auv?file=src%2FApp.vue

PrimeVue version

4.0.4

Vue version

3.4.37

Language

TypeScript

Build / Runtime

Vite

Browser(s)

No response

Steps to reproduce the behavior

1. Klick to expand the Menubar if it is in mobile mode.
2. See that the pt styling is not being applied.

Expected behavior

The styles should be applied to the child elements.