I have a strange problem, when you post anonymously you can see the ReCaptcha, when they reply by anonymous ReCaptcha does not appear, but still receive the error notice to enter the code.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.