Visual Glitch on Mobile Nav Menu on Firefox browser

[AC40]

Scale Version
3.0.0-beta.154

Framework and version
Plain HTML and Scale Components

Current Behavior
The chevrons which indicate the option to drill down or up in the mobile nav menu are out of place by default. They sometimes, inconsistently reset. A way to force them into their place is, weirdly, hovering (not clicking or interacting, just hovering) over them with the element selector. This makes them snap into place. But, whenever the menu is opened again, they are out of place.
A screen recording from the Firefox browser (the only browser I could find, where the issue occurs):
https://github.com/user-attachments/assets/6b6131fb-d36b-436e-9fa2-0cb46e75914f

Expected Behavior
As in other browsers, the chevrons should be in place always not not glitch around.
A screen recording from the Chrome browser (works in Edge as well):
https://github.com/user-attachments/assets/e4befd1e-fe99-4f45-b010-828ca7fc0cbb

Code Reproduction
Any of the official scale examples with multiple levels work (e.g.: examples/telekom-header-samples/mega-menu

<scale-telekom-header>
    <scale-telekom-nav-list variant="functions" slot="functions" alignment="right">
      <scale-telekom-nav-item class="burger-item">
        <button>
          <scale-badge>
            <scale-icon-action-menu></scale-icon-action-menu>
          </scale-badge>
        </button>
        <scale-telekom-nav-flyout class="mobile-nav-flyout">
          <!-- the mobile navigation structure goes here -->
          <scale-telekom-mobile-flyout-canvas app-name="Standard Version" app-name-link="/foo">

            <scale-telekom-mobile-menu slot="mobile-main-nav" app-name-link="/bar">
                <scale-telekom-mobile-menu-item active>
                  <a href="#">Topic One</a>
                  <scale-telekom-mobile-menu-item active slot="children">
                    <a href="#">Second Level</a>
                    <scale-telekom-mobile-menu-item slot="children">
                      <a href="#">Third Level</a>
                    </scale-telekom-mobile-menu-item>
                  </scale-telekom-mobile-menu-item>
                </scale-telekom-mobile-menu-item>
              </scale-telekom-mobile-menu>
          </scale-telekom-mobile-flyout-canvas>
        </scale-telekom-nav-flyout>
      </scale-telekom-nav-item>
    </scale-telekom-nav-list>
    <!-- main navigation (desktop) -->
    <scale-telekom-nav-list variant="main-nav" slot="main-nav">
      <scale-telekom-nav-item active>
        <a href="#">Topic One</a>
      </scale-telekom-nav-item>
      </scale-telekom-nav-item>
    </scale-telekom-nav-list>
  </scale-telekom-header>

Desktop (please complete the following information):

• OS: Windows
• Browser: Firefox
• Version: 133