Disable share-panel and sidebar autoscroll in YouTube

YT STOP-AS.user.js

// ==UserScript==
// @version     1.0.1
// @name        Disable share-panel and sidebar autoscroll in YouTube
// @match       *://www.youtube.com/*
// @run-at      document-start
// @grant       none
// @noframes
// ==/UserScript==
(function ytascrl() {
    'use strict';
    var injection;
    if (document.querySelector('[name="html5player/html5player"]')) {
        window.location.reload(false);
    } else if (!document.getElementById('ytascrl')) {
        injection = document.createElement('script');
        injection.id = 'ytascrl';
        injection.textContent = '(' + ytascrl + '())';
        document.documentElement.appendChild(injection);
        return;
    }
    function sidebarPolice(a){
        var parent = a.target.parentNode;
        if (parent && parent.classList.contains('yt-uix-simple-thumb-wrap') && !a.target.getAttribute('data-thumb')) {
            parent.classList.remove('yt-uix-simple-thumb-wrap');
        }
        
    }
    function scriptExit(a){
        function baseDetour(b) {
            return function () {
                b.apply(this, arguments);
                window.yt.config_.SHARE_ON_VIDEO_END = false;
            };
        }
        if (a.target.getAttribute('name') === 'www/base') {
                window.yt.setConfig = baseDetour(window.yt.setConfig);
        }
    }
    if (window.chrome) {
        document.documentElement.addEventListener('load', sidebarPolice, true)
        document.documentElement.addEventListener('load', scriptExit, true);
    } else {
        document.addEventListener('load', sidebarPolice, true)
        window.addEventListener('afterscriptexecute', scriptExit);
    }
}());