Play1.4.3 and newer not allow to override default FastTag.class (FastTag with empty namespace ) @FastTags.Namespace("")

I can not override defaut fastTag affter the fix : https://play.lighthouseapp.com/projects/57987/tickets/2040

In my application I override default #{filed} tags to handle some new html attributes with the code like this:

@FastTags.Namespace
public class CustomTag extends FastTags {
    public static void _field(Map<?, ?> args, Closure body, PrintWriter out, ExecutableTemplate template, int fromLine) {
...
  }
}

From play-1.4.3 that does't works. Workaround solution is adding namespace to my tag @FastTags.Namespace("custom") but I have to change many template that use #{field} to #{custom.filed}. I'm not sure that is a incident after fix issue: https://play.lighthouseapp.com/projects/57987/tickets/2040 or we don't want to allow override default FastTag

Play Version (1.4.3 )

1.4.2...1.4.3
GroovyTemplateCompiler.java:381
Suggestion:
Change from

List<Class> fastClasses = new ArrayList<>();
fastClasses.add(FastTags.class);
 fastClasses.addAll(Play.classloader.getAssignableClasses(FastTags.class));

to

List<Class> fastClasses = new ArrayList<>();
fastClasses.addAll(Play.classloader.getAssignableClasses(FastTags.class));
fastClasses.add(FastTags.class);