A client has messaged us to tell us their ReCaptcha keeps on loading when a user tries to reset their password, retrieve their lost username or use any form that has ReCaptcha installed. Once the user clicked the "I'm not a robot" it simply loads forever.

The reason this happens is that even on the latest (and final) version of Joomla 3, which is version 3.10.12 the MooTools libraries that are loaded is v1.4.x and this version is no longer supported by Google reCaptcha. Joomla 4 has moved to a jQuery based solution, but how do we solve for Joomla 3 legacy sites that still use Google ReCaptcha?