I have a form with some fields on which I would like to enable restricted characters.
In the *'Edit Page Item'* form, in the *'Security'* section, there is a setting called *'Restricted Characters'*.
When I change this to something other than - All Characters Allowed - , i.e. one of the 'Blacklist' options, I try to test this from the front end form but putting an ampersand character in (or another blacklisted char).
When I try to submit the form I get an "unexpected internal application error" rather than an error that is caught and displayed nicely on the page.
Should this be out of the box?
Or do I have to catch this using a custom error handling function?