Warning appears when embedded application with specific rules is deployed on EAP running on Windows

Issue

When embedded application with specific rule is deployed on EAP which is running on Windows,
the following warning happens.

WARN  [org.jboss.modules.define] (ServerService Thread Pool -- 18) Failed to define class com.sample.userData in Module "deployment.calculate-point-eap.war" from Service Module Loader: java.lang.NoClassDefFoundError: Failed to link com/sample/userData (Module "deployment.calculate-point-eap.war" from Service Module Loader): com/sample/userData (wrong name: com/sample/UserData)

The problematic rules looks like the following.

package com.sample.rule;
//generated from Decision Table
import com.sample.*;
dialect "mvel"
// rule values at C12, header at C7
rule "CalculatePoint_12"
    when
           userData : UserData(memberType.equals("member"))
    then
               ...
end

i.e. Only first one character (a capital letter or a small letter) is different from a bind variable name(i.e. userData) in the class name(i.e. UserData).

This warning does not happen when running it as java standalone application or on EAP running on RHEL.