Not able to update KieBase at runtime for Kie-sever in BPMS/BRMS 6 ?

Issue

We are not able to update custom java function without rebooting server instance.It fails with exception:

ERROR [org.drools.compiler.kie.builder.impl.KieContainerImpl] (http-/127.0.0.1:8080-5) Unable to update KieBase: defaultKieBase to release example:test:1.1
Rule Compilation error : [Rule name='dependency test']
    example/Rule_dependency_test1308922377.java (7:567) : The method print(String) in the type TestFunction is not applicable for the arguments (String, int)


ERROR [org.kie.server.services.rest.KieServerRestImpl] (http-/127.0.0.1:8080-5) Error updating releaseId for container test to version example:test:1.1
Messages: [Message [id=1, level=ERROR, path=test.drl, line=10, column=0
   text=Rule Compilation error The method print(String) in the type TestFunction is not applicable for the arguments (String, int)]]