Note: There are no other changes in this release and any work previously done towards XenForo 2.2.11 - including a new CAPTCHA option by Cloudflare Turnstile and various bug fixes and improvements - will be released alongside XenForo 2.2.12 in the coming weeks.
Applying a patch manually
Download the 2211patch.zip file attached to this message. It will contain the following file:- src/XF/BbCode/Renderer/EditorHtml.php
Note: If you decide to patch the files instead of doing a full upgrade, your "File health check" will report this file as having "Unexpected contents". Because these files no longer contain the same contents your version of XF was shipped with, this is expected and can be safely ignored.