ExecutionObj.getEventArgs().preventDefault() working variantly on Lead Qualification.

Hello Everyone,

I'm stuck with this issue in CRM 2013. On-Save Event I'm using the following code for Validation before Lead Qualification. I've also checked to pass execution parameter during the function call On-Save Event.

function FrmOnSave(prmContext)
 { 
    // Local variable to store value indicating how the save event was initiated by the user.
    var wod_SaveMode, wod_SaveEventVal;
   
    // Change the Save Event Value as per required Save Event
    wod_SaveEventVal = 16;

    if (prmContext != null && prmContext.getEventArgs() != null)
 {

        wod_SaveMode = prmContext.getEventArgs().getSaveMode();

        if (wod_SaveMode == wod_SaveEventVal)
 {
         // Write your validation code here
         if(Xrm.Page.getAttribute("industrycode").getValue() == 1)
{
            // Use the code line below only if validation is failed then abort function save event

           alert("Choose Appropriate Industry Code");

           prmContext.getEventArgs().preventDefault();
 
            //var x = prmContext.getEventArgs().isDefaultPrevented();
            //alert(x);
}

        }
    }
}

This is working fine on CRM 2011, But on CRM 2013 it's showing variant results. Like:

1> If I open a lead record and directly click on Qualify button then it Qualifies the Lead without any validation (preventDefault() doesn't seems to work). 

2> If I open a Lead form, change any random field value and then click on the Qualify button, it works fine again. 

Please help to figure out the issue, Am I missing anything here ?

Thanks, Ashwani