failing test for new Text validation issue

t/fields/text-subclass.t

@@ -0,0 +1,47 @@
+use strict;
+use warnings;
+use Test::More;
+
+{
+    package MyApp::Field::DuplicateText;
+    use HTML::FormHandler::Moose;
+    extends 'HTML::FormHandler::Field::Text';
+
+    apply [ {
+        transform => sub {
+            my $value = shift;
+            # collapses down to a single entry if passed a list where all
+            # values are identical
+            return $value->[0] if
+                defined $value
+                and ref $value eq 'ARRAY'
+                and not grep { $value->[0] ne $_ } @$value;
+            return $value;
+        },
+    }];
+}
+
+
+# tests the TextCSV field
+{
+    package MyApp::Form::Test;
+    use HTML::FormHandler::Moose;
+    extends 'HTML::FormHandler';
+
+    has_field 'foo' => ( type => '+MyApp::Field::DuplicateText' );
+    has_field 'bar' => ( type => '+MyApp::Field::DuplicateText' );
+}
+
+my $form = MyApp::Form::Test->new;
+ok( $form );
+$form->process( params => { foo => '1', bar => ['2,2'] } );
+
+TODO: {
+local $TODO = 'this test broke with commit 0cae37c6';
+
+ok($form->validated, 'field of list values validates')
+    or diag 'got errors: ', explain [ $form->errors_by_name ];
+
+}
+
+done_testing;