Project>Validate doesn't trigger a full project validation by JBT Project validator

1. Create a JSF KickStart project
3. Open inputname.xhtml
4. Add <h:outputText value="#

" />
5. Save the file.
6. Open Problems View.
7. ASSERT: There is a warning "nameX cannot be resolved".
8. Disable builder validation for the project:
Window->Preferences->Validation->JBoss Tools Project Validator->Build
9. Fix the problem in inputname.xhtml: remove "X" in the end of the EL: <h:outputText value="#

" />
10. Save the file.
11. ASSERT: There is still a warning "names cannot be resolved" in Problems View.
12. Do Project->Validate on the project
13. FAILURE: There is still a warning in Problems View: "nameX cannot be resolved"