Registration Form Modifications
No images for this part as nothing should be visually different!
The registration form now includes several approaches to interfere with bot registrations, including:
Invisible honeypot fields that legitimate users won't see but that bots will (usually) see and fill in. If a value is entered, we know the user is a bot.
The honeypot fields are also inserted randomly in multiple places, which can cause the valid fields to be in different positions (internally; visually they are the same). This can interfere with some bot implementations.
Field name randomization. Each time the form is viewed, the name of the fields that are submitted to the server varies and thus cannot be predicted by a bot.
Just an update, even if fastcgi_cache already disabled.
Still I received some emails complaining that they can't register with the same error.
But I can't even replicate it myself
So not a problem with fastcgi_cache.
Maybe related to memcached? or zend opcache
That's the only caching playing on registration page.