NavigationDrawer component collapses on hovering its children's "dropdown".

I'm using ipyvuetify version 1.8.1 have a navigation drawer like this:

import ipyvuetify as v

selector = v.select_or_create(v_model='nst', multiple=True)

drawer = v.NavigationDrawer(
                       dark=True,
                       expand_on_hover=True,
                       mini_variant_width='75px',
                       fixed=True, 
                       floating=True,
                       children=[ v.ListItem( children=[selector] ) ]

    )

When I hover the mouse cursor over its children's "dropdown" it collapses indenpendently if the children is an select_or_create or an select component:

I've tried tuning its parameters values, as well the combinations of values of others select_or_create component parameters values (permanent, mini_variant, app, disable_route_watcher, hide_overlay, clipped, absolute, touchless), and the same thing heappened. What could this be.

Reproduce the behavior with ipyvuetify 1.8.1 using the provided NavigationDrawer, ListItem, and select_or_create example. Start by tracing the NavigationDrawer hover behavior and its interaction with the select component; done means the drawer does not collapse when hovering the child dropdown.