ROO JSF plugin validation error

Hello dear Roo Forum !

I'm having troubles with bean validation on a JSF ROO project. Actually, this error happens every time, and perhaps it is a bug on the plugin.
I can recreate the error situation following the next steps:

1- Create a jpa entity (IE Person) with some required field (IE name), or some constraint like Min or Max value
2- Setup web jsf and do a "web jsf all" to generate the web layer.
3- Deploy the app and try to create a Person, leave the required field blank and try to SAVE.
4- Error message displays that the field is required, that's ok. Then close the Create dialog.
5- Try to create a new Person, and ... error ! for some reason the "create" form doesn't show anymore.

are you experiencing a similar issue ?
regards
Emilio