Scroll detection stop after page reload

[Sceat]

Vue version: 2.6.8

vue2-scrollspy version: 2.3.1

Expected behavior:

Should add the active class properly

Actual behavior:

Work properly after a vue dev server hot-reload but stop adding the active class after a browser page reload

Demo link:

• DEMO

ul.tabs(v-scroll-spy-active v-scroll-spy-link="{selector: 'li'}")
            li.tab(v-for="c in myarray" :key="c") {{c}}

.food(v-scroll-spy)
    custom-component(v-for="c in myarray" :key="c")

Workaround

.food(v-scroll-spy)
    .useless-div(v-for="c in myarray" :key="c") 
        custom-component