Sharing options blank can only unshare

Nextcloud version: 13.0.2
Operating system and version: arch linux
nginx version: 1.14.0
PHP version: 7.2.5

The issue:
Can’t set sharing permissions, can only unshare file. “settings/user/sharing” is blank. I have no idea what is going on. Tested with another browser (konqueror) “settings/user/sharing” is still blank, but sharing permissions available. Seems firefox problem

This is the first time I see this issue

Logs (even with log level 0) not react to clicking any sharing menu

The output of config.php file in /path/to/nextcloud

<?php
$CONFIG = array (
  'instanceid' => '***',
  'passwordsalt' => '***',
  'trusted_domains' => 
  array (
    0 => '***',
  ),
  'datadirectory' => '/vhome/***',
  'overwrite.cli.url' => '/files',
  'overwritewebroot' => '/files',
  'dbtype' => 'mysql',
  'version' => '13.0.2.1',
  'dbname' => '***',
  'dbhost' => 'localhost:/run/mysqld/mysqld.sock',
  'dbtableprefix' => 'nc_',
  'dbuser' => '***',
  'dbpassword' => '***',
  'installed' => true,
  'forcessl' => true,
  'enable_previews' => true,
  'preview_max_x' => 100,
  'preview_max_y' => 100,
  'preview_max_scale_factor' => 10,
  'preview_libreoffice_path' => '/usr/bin/libreoffice',
  'preview_office_cl_parameters' => '',
  'enable_avatars' => true,
  'theme' => '',
  'maintenance' => false,
  'secret' => '***',
  'log_type' => 'syslog',
  'logfile' => '',
  'logtimezone' => '***',
  'log_authfailip' => true,
  'loglevel' => 2,
  'log_rotate_size' => 1048576,
  'trashbin_retention_obligation' => 'auto',
  'appstore.experimental.enabled' => true,
  'filelocking.enabled' => 'true',
  'memcache.local' => '\\OC\\Memcache\\Redis',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'redis' => 
  array (
    'host' => '/run/redis/redis.sock',
    'port' => 0,
    'timeout' => 0.0,
  ),
  'ldapIgnoreNamingRules' => false,
  'htaccess.RewriteBase' => '/files',
  'mail_smtpmode' => 'smtp',
  'mail_domain' => '***',
  'mail_smtpsecure' => 'tls',
  'mail_smtpauth' => 1,
  'mail_from_address' => '***',
  'mail_smtpauthtype' => 'PLAIN',
  'mail_smtphost' => '***',
  'mail_smtpport' => '587',
  'mail_smtpname' => '***@***',
  'mail_smtppassword' => '***',
  'ldapProviderFactory' => '\\OCA\\User_LDAP\\LDAPProviderFactory',
  'auth.bruteforce.protection.enabled' => false,
  'updater.release.channel' => 'stable',
);

Ok, it was my fault. uBlock Origin with cosmetic filtering removed sharing options. My bad, but maybe leave this topic just in case someone will have this trouble