When a form is created in shared content and then used on Web
pages, built-in features like validation can break.
Forms are normally built directly on a Web page and have
built-in functionality, such as validation (e.g. 'required' or
'email address required').
When a form is built in Shared Content, and then displayed on a
regular Web page, such as through a Shared Content Reference, these
features can be affected. In this case, the normal validation is
disrupted and users are allowed to not meet these requirements,
with no error message being displayed.
There is no workaround and we strongly discourage building forms
in Shared Content.
If you need have more complex needs for forms that are not well
met by the UBCMS, please consider using Formstack (more