Created attachment 1082744 [details]
pojo which contains Message class

Description of problem:
Validation on business-central does not alert drl error which BRMS 5.3.1 and JBDS 8.1 does.

Version-Release number of selected component (if applicable):
6.1.3

Steps to Reproduce:
Please proceed all of instructions on business-central 
1: upload the attached reproducer-0.0.1-SNAPSHOT.jar into artifact repository
2: create a new project
3: set project's dependency to reproducer-0.0.1-SNAPSHOT.jar
3: create a new package "com.sample"
4: create a new drl which looks like attached reproducer.drl
5: click validate

Actual results:
Although attribute of Message, "bra", is not defined in the Class, validation does not alert any error. 

Expected results:
Validate fails.

Additional info:
With JBoss developer Studio 8.1, following error message will be displayed on the console:
===
BuildError: Unable to create Field Extractor for 'bra'Field/method 'bra' not found for class 'com.sample$Message'
Sample.drl	/reproducerProject/src/main/resources/rules  line 7  Drools Error
===
Also with guvnor comes with BRMS 5.3.1, validation works as expected too.