descripion field of task tab becomes blank after more than 255 characters are entered

How to reproduce it:

1. Create a project according to the instructions on http://cubikalabs.wordpress.com/2009/12/15/grails-flex-scaffold-gfsv0-2-2/

2. Create a good task and click submit

3. Edit the description of the task with more than 255 characters and click submit

4. Click OK on the Invalid Form and click Cancel

5. Double click the same task again

You will see the description field blank and the value appears only when you set focus on the field.