Make it works in Stack Apps Exchange. Your userscript works on Stack Overflow but doesn't work in Stack Apps Exchange, so I prefer to use:
// @match *://*.askubuntu.com/*
// @match *://*.mathoverflow.net/*
// @match *://*.serverfault.com/*
// @match *://*.stackapps.com/*
// @match *://*.stackexchange.com/*
// @match *://*.stackoverflow.com/*
// @match *://*.superuser.com/*
// @exclude *://api.stackexchange.com/*
// @exclude *://blog.*.com/*
// @exclude *://chat.*.com/*
// @exclude https*://contests.stackoverflow*.com/*
// @exclude *://data.stackexchange.com/*
// @exclude *://elections.stackexchange.com/*
// @exclude *://openid.stackexchange.com/*
// @exclude *://stackexchange.com/*
It will be great for users who have bookmarks in Stack Apps Exchange.
Thanks for this answer.