i use extension :
Flarum core 0.1.0-beta.7
PHP 7.0.22-0ubuntu0.17.04.1
Loaded extensions: Core, date, libxml, openssl, pcre, zlib, filter, hash, pcntl, Reflection, SPL, session, standard, mysqlnd, PDO, xml, calendar, ctype, curl, d om, mbstring, fileinfo, ftp, gd, gettext, iconv, json, exif, mysqli, pdo_mysql, Phar, posix, readline, shmop, SimpleXML, sockets, sysvmsg, sysvsem, sysvshm, tok enizer, wddx, xmlreader, xmlwriter, xsl, zip, Zend OPcache
EXT flarum-akismet v0.1.0-beta.6
EXT flagrow-analytics 0.5.0
EXT flarum-approval v0.1.0-beta.7
EXT s9e-autoimage 1.0.2
EXT flarum-bbcode v0.1.0-beta.5
EXT wiwatsrt-best-answer v0.1.0-beta.11
EXT datitisev-dashboard v0.1.0-beta.6
EXT flarum-emoji v0.1.0-beta.6
EXT clarkwinkelmann-emojionearea 0.1.2
EXT flarum-english v0.1.0-beta.7
EXT flarum-auth-facebook v0.1.0-beta.6
EXT flagrow-ads 0.1.0-beta.4
EXT flagrow-fonts 0.1.2
EXT flagrow-users-list 0.1.2
EXT flarum-flags v0.1.0-beta.7
EXT realodix-indonesian 1.3.9
EXT flarum-likes v0.1.0-beta.6
EXT sijad-links 0.1.0-beta.6
EXT flarum-lock v0.1.0-beta.7
EXT wiseclock-login2see 0.1.1
EXT flarum-markdown v0.1.0-beta.5
EXT s9e-mediaembed 0.3.2
EXT flarum-mentions v0.1.0-beta.7
EXT reflar-user-management 0.1.4
EXT wiseclock-reply2see 0.1.1
EXT davis-securehttps 0.1.0-beta5
EXT davis-socialprofile 0.2.3
EXT flarum-sticky v0.1.0-beta.7
EXT flarum-subscriptions v0.1.0-beta.6
EXT flarum-suspend v0.1.0-beta.7
EXT amaurycarrade-syndication v0.1.5
EXT flarum-tags v0.1.0-beta.8
EXT flarum-auth-twitter v0.1.0-beta.6
all url will make this happen.
For example Post link
if you click link in post you will see popup for log in...
