in #28721 // before $builder->add('start_at', DateTimeType::class, [ 'widget' => 'single_text', 'date_format' => 'dd.MM.yyyy', 'date_widget' => 'single_text', 'time_widget' => 'choice', ]); // after $builder->add('start_at', DateTimeType::class, [ 'widget' => 'single_text', ]); // or $builder->add('start_at', DateTimeType::class, [ 'widget' => 'text', 'date_format' => 'dd.MM.yyyy', 'date_widget' => 'single_text', 'time_widget' => 'single_text', ]);