Issue summary updated through comment #142.
To ensure that all form elements are accessible, we need a mechanism to ensure that #title is set up for all the form elements that should use it, so that defining that form element without using #title is not possible.
There was a proposal to create an abstracted "Property Validation API" that can be used to verify that all the required properties of a certain element have been set properly. This was rejected since the feature was only useful when developers are building the form, and is needless code execution otherwise.
In #128, tstoeckler suggested a core test that would check every module's forms and ensure that relevant form elements have a #title attribute. This would prevent any new core from being added without necessary #title attributes, since those forms would not pass this test.
In #882694: Add missing form element titles for accessibility → @Sun suggested that a mechanism be put in place to ensure that all form fields have a #title.
the proper fix for D8 is to additionally require a non-empty #title for all form elements via form_builder(), throwing an exception or error message if one without is encountered, so as to ensure that every form is accessible.
EDIT: That is, because Form API is not able to throw a form validation error for a form element without #title. You simply see the same form, without any error message.(http://drupal.org/node/882694#comment-3513452)
Needs work
11.0 🔥
It affects the ability of people with disabilities or special needs (such as blindness or color-blindness) to use Drupal.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I've updated this to an MR. I had to handle the removal of Book.
I also changed the deprecation removal notice to 11.x I'm not sure if that is correct.
Hiding all patches.
Ok this still needs work there are a lot of test failures.