No error highlighting on a browser field that is required and left blank

[adam-jones-net]

I have various simple fields in a twill form that work fine in terms of error validation. Ie, if I set them as required and in the request file and blade file, I get a red msg below the field and the title of the field itself goes red.

However with browser fields this doesn't happen. I seem to have the basic request file setup correctly because I can see that the return from the ajax call is indeed an error about my browser field that is not completed but required.

The return from the ajax call if I leave a required text fiend and browser field uncomplete is:

{"text_field":["The text field is required."],"browserfield":["The browser field is required."]}

Why would this be, how can I troubleshoot this ? Anything obvious to check for ?

[adam-jones-net]

It seems that I've fixed this, it was because in the requests file I had no entry in here :

public function messages() {
return [

    ];

This is still somewhat inconsistent behaviour I believe as the other fields seem to work without an entry in msgs.