generateCaptchaAction don't work properly

[didix16]

Hello, I'm trying to generate the captcha by URL. It seems allways triggers error because the session never has the key and the flag isOK never changes to true.

I bypassed the session whitelist key check by putting the flag to true and it seems works.

Is there any way to correcty use the Bundle without using FormType and using as URL without this issue?

I don't see anything usefull at the documentation.

Thanks in advance.