Hi,

I understand the point, thanks for your clear explanation. Yes that is possible, I have created a code for you to support that, here is the code you can save in Theme Options > Footer > JavaScript & Tracking Code:

<script>
jQuery( document ).ready( function () {
    setTimeout( function () {
        var $subs = jQuery( '.sidebar-menu .menu-item-has-children' );
        $subs.unbind();
        var lastClicked = null;
        $subs.each( function ( i, el ) {
            var $li = jQuery( el ),
                $sub = $li.find( '> ul' ),
                $link = $li.find( '> a' );
            $sub.hide().css( 'height', '' ).find( '.opacity-hidden' ).removeClass( 'opacity-hidden' );
            $link.on( 'click', function ( ev ) {
                ev.preventDefault();
                $sub.slideToggle( 300 );
                console.log( $sub[ 0 ] );
            } );
        } );
    }, 100 );
} );
</script>

Here is how it works:

https://d.pr/v/axX2DE

I hope you will like it.