Recyclex / GBF Sound Focus

// ==UserScript==
// @name         GBF Sound Focus
// @version      20200322.1
// @description  Continue playing sound when browser loses focus.
// @match        *://game.granbluefantasy.jp/*
// @match        *://gbf.game.mbga.jp/*
// @license      MIT
// ==/UserScript==

(function() {
window.addEventListener("blur", function (e) {
e.stopImmediatePropagation();
}, false);
})();