Facebook - Fix Double Scrollbar on Messenger

Removes the useless additional scrollbar that apprears on the fullscreen Facebook Chats / Messenger.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name                Facebook - Fix Double Scrollbar on Messenger
// @description         Removes the useless additional scrollbar that apprears on the fullscreen Facebook Chats / Messenger.
// @version             1.0

// @namespace           io.github.ni554n
// @match               https://*.facebook.com/*
// @grant               GM_addStyle
// @run-at              document-idle

// @supportURL          https://github.com/ni554n/userscripts/issues
// @license             MIT

// @author              Nissan Ahmed
// @homepageURL         https://ni554n.github.io/
// @contributionURL     https://paypal.me/ni554n
// ==/UserScript==

const css = `
:root {
  overflow-y: auto !important;
}`;

GM_addStyle(css);