Some of the changes in XF 1.5.22 include:
- Improve compatibility with MySQL 8.0.
- Improve support for newer TLS versions in emails for PHP versions >= PHP 5.6.
- In the spam cleaner only show email addresses to admin users who have the users permission.
- Use deconstructImages on GIFs (where available) in order to reduce the resulting file size.
- Bypass username validation when renaming a user on delete.
- Ensure registration defaults do not override receive_admin_email settings specified on registration.
- Prevent a redirect loop in some cases when accepting terms/privacy policy when the request originates from those pages.
- Fix missing phrase param on the accept_terms page.
- Fix URL typo in Help controller.
- Ensure the thread redirect key is correctly rebuilt when moving a redirect thread.
- accept_terms
- register_form
- spam_cleaner