This script disables the rounded watch page side panel in all uses. It is based on the Mid-2021-October 2022 Watch11 Reconstruct script by Magma_Craft which sadly no longer works.
// ==UserScript==
// @name YouTube - Disable rounded watch page side panel
// @version 2023.06.09
// @description This script disables the rounded watch page side panel in all uses. It is based on the Mid-2021-October 2022 Watch11 Reconstruct script by Magma_Craft which sadly no longer works.
// @author Alpharetzy
// @license MIT
// @match https://www.youtube.com/*
// @namespace https://greasyfork.org/en/users/1094802
// @icon https://www.youtube.com/favicon.ico
// @grant none
// ==/UserScript==
(function() {
window['yt'] = window['yt'] || {};
yt['config_'] = yt.config_ || {};
yt.config_['EXPERIMENT_FLAGS'] = yt.config_.EXPERIMENT_FLAGS || {};
var iv = setInterval(function() {
yt.config_.EXPERIMENT_FLAGS.kevlar_watch_modern_panels = false;
yt.config_.EXPERIMENT_FLAGS.kevlar_watch_panel_height_matches_player = false;
}, 1);
var to = setTimeout(function() {
clearInterval(iv);
}, 1000)
})();