Unfortunately that will not be possible with the way that captcha is controlled

Disappointing.... Other components are designed with captcha as an option.

I can confirm the problem

yes, in 3.6.5 is ok, in 3.7.0 no :(

the request was to have captcha enabled per menu item - or have I misunderstood something

The request was ... however it could be done ... to not force captcha on a frontend article submission just because there is a default captcha plugin set in the global config. Menu item setting was just a possible suggestion.

yes, now captcha is enabled by default in insert/edit article in frontend.
For me you need to reopen the issue

So to be clear you are saying that captcha should be able to be set on for user registration and/or contact forms and/or article submission and that right now if it is enabled it is always enabled for all of those

No.
Install a fresh 3.7.0, enable and configure the plugin "Captcha - ReCaptcha" and set it in the global configuration.
Now in frontend article edit/submission captcha requirement.

Maybe you just wanted Captcha only in contact, but if you enable it in global config now it is in frontend article edit/submission.

Registration and contact forms have the option whether to use captcha or not ... and whether or not there is a default captcha plugin set. For frontend article submission, there is no option.

@ron4mac yes there is

in Joomla 3.7.0 now the parameter is:
Articles: Options --> Editing Layout --> Allow Captcha on submit

but if it is "None Selected" it is enabled

ok, if I save it again "None Selected" it is ok, no displayed.
The problems seems in the update from 3.6.5 to 3.7.0 this parameter no value in database and no by default in "None Selected"

@AlexRed Great! thanks for discovering that. Problem (mostly) solved!

I confirm the issue, by default the captcha should not be displayed if the parameter is set to "None Selected", even if the Content's Options has never been saved.
Moreover, who has a template different from Protostar, don't see the captcha and it's not possible to send articles from frontend, but they can't understand why...

I confirm the issue.
It looks like the code checks only if captcha is implemented in the global configuration:
$captchaSet = $params->get('captcha', JFactory::getApplication()->get('captcha', '0'));

Looks like the code was copied from com_contact, but we have a different default value here and thus it doesn't work. There are two issues here:

• The default value specified in the XML doesn't match the one set in the code ("default" is here the global setting)
• You can't select "- Use Default -" in that option.

The only possible fix is #15687 which means it will take the global setting by default like in the other places.

Closing as there is a PR to test.

Reopening since requested in #15687 (comment)

However I don't think there is a way to solve this.

made a PR that does not solve this issue in particular (which i also doubt there is a way to solve) but instead gives a little more information to what captcha system is being applied.
See #16573

Closed