ExecutionEngine.callingScriptHash() problem return value

[sjoerd-dijkstra]

Dear devs,

When calling ExecutionEngine.callingScriptHash() from org.neo.smartcontract.framework.services.system we are experiencing a problem when verifying another smart contract.

When the function is called in Main(), it gives the correct smart contract caller hash. Like so:

public class Token extends SmartContract{

    // main
    public static Object Main(String operation, Object[] args) {

        // correct hash 
        byte[] caller = (byte[]) ExecutionEngine.callingScriptHash();

    }

}

However, when calling the script from a nested function in Main(), for example someFunction() that returns a boolean is gives a different and incorrect hash when the script is called. Like so:

public class Token extends SmartContract{

    // some function
    public static boolean someFuntion() {

        // wrong and different hash!
        byte[] caller = (byte[]) ExecutionEngine.callingScriptHash(); //  < ----

        return true;
    }

    // main
    public static Object Main(String operation, Object[] args) {

        // function call
        someFuntion();

    }

}

Could you help me? How can we avoid this situation? I can provide more info. We can not verify a script now. Are we doing something wrong maybe?