Scrollbar

I unset the `scrollbar-gutter: unset;`
  .fi-sidebar-nav {
        row-gap: calc(var(--spacing)*7);
        padding-inline:calc(var(--spacing)*6);padding-block: calc(var(--spacing)*8);
        scrollbar-gutter: stable; <---
        flex-direction: column;
        flex-grow: 1;
        display: flex;
        overflow: hidden auto
    }

I unset the `scrollbar-gutter: unset;`
  .fi-sidebar-nav {
        row-gap: calc(var(--spacing)*7);
        padding-inline:calc(var(--spacing)*6);padding-block: calc(var(--spacing)*8);
        scrollbar-gutter: stable; <---
        flex-direction: column;
        flex-grow: 1;
        display: flex;
        overflow: hidden auto
    }