Server-side validation with tabs in modal

[bkonia]

When using server-side validation on a modal page with tabs, if the validation fails, it returns the user to the first tab in the modal, which is not necessarily the tab where the error occurred. This is confusing to users, because it appears as though the submission succeeded, since there's no visible error message. Is this the expected behavior for server side validation? Is there any way to make it automatically return the user to the tab where the error occurred? This is happening in PHPMaker v2021.0.15

[arbei]

By "tabs" did you mean Multi-Page? It seems that the generated code only focuses the error field after client side validation, it won't focus the field after server side validation on page load. However, you can do it yourself by Startup Script, e.g. Edit page of the "cars" table (v2021)

loadjs.ready("fcarsedit", function () { // Form is ready
    $(function() { // On page load
        for (let field of Object.values(fcarsedit.fields)) { // Loop through the fields
            if (field.invalid) { // Field is invalid
                fcarsedit.makeVisible(field.element); // Make it visible
                field.focus(); // Focus it
                break;
            }
        }
    });
});