This issue seems is not present on https://discuss.flarum.org/, is related to the Beta 13?
Flarum core 0.1.0-beta.13
PHP version: 7.3.xx
Loaded extensions: Core, date, libxml, pcre, dom, fileinfo, filter, hash, json, SPL, bz2, posix, Reflection, session, SimpleXML, standard, xml, xmlreader, xmlwriter, bcmath, openssl, calendar, ctype, curl, dba, mbstring, ftp, gd, gettext, gmp, iconv, imap, intl, ldap, exif, memcached, zlib, pcntl, PDO, pdo_sqlite, shmop, soap, sockets, sqlite3, sysvsem, sysvshm, tidy, tokenizer, wddx, xmlrpc, xsl, zip, Phar, mysqlnd, mysqli, pdo_mysql, ionCube Loader, Zend OPcache
+------------------------------+-----------------+--------+
| Flarum Extensions | | |
+------------------------------+-----------------+--------+
| ID | Version | Commit |
+------------------------------+-----------------+--------+
| flarum-approval | v0.1.0-beta.13 | |
| flarum-bbcode | v0.1.0-beta.12 | |
| flarum-emoji | v0.1.0-beta.13 | |
| flarum-flags | v0.1.0-beta.13 | |
| flarum-likes | v0.1.0-beta.13 | |
| flarum-lock | v0.1.0-beta.13 | |
| flarum-mentions | v0.1.0-beta.13 | |
| flarum-sticky | v0.1.0-beta.13 | |
| flarum-subscriptions | v0.1.0-beta.13 | |
| flarum-lang-english | v0.1.0-beta.13 | |
| flarum-statistics | v0.1.0-beta.13 | |
| flarum-akismet | v0.1.0-beta.13 | |
| nearata-lang-italian | v0.1.0-beta.9.1 | |
| flarum-auth-facebook | v0.1.0-beta.13 | |
| fof-links | 0.2.1 | |
| flarum-auth-github | v0.1.0-beta.13 | |
| flarum-auth-twitter | v0.1.0-beta.13 | |
| fof-default-user-preferences | 0.2.0 | |
| fof-user-bio | 0.1.3 | |
| fof-recaptcha | 0.1.2 | |
| flarum-suspend | v0.1.0-beta.13 | |
| flarum-pusher | v0.1.0-beta.13 | |
| flarum-markdown | v0.1.0-beta.13 | |
| reflar-cookie-consent | 0.2.0 | |
| franzl-open-links-in-new-tab | v0.1.0 | |
| clarkwinkelmann-emojionearea | 0.2.2 | |
| fof-user-directory | 0.3.4 | |
| noriods-auto-more | 0.3.0 | |
| flarum-tags | v0.1.0-beta.13 | |
| fof-upload | 0.9.1 | |
+------------------------------+-----------------+--------+
Base URL: https://community.peopleinside.it
Installation path: [...]community.peopleinside.it
Tested without custom CSS theme.