ExtJs 5.1: store getModifiedRecords() not returning actuall results

Hello Folks,

While am working on Extjs 5.1. I faced an Issue like i didn't get the Modified records from Store. Then i searched in the forum it is an issue in Ext 5.1.

looping the store items and validating the dirty property true or not.

like   item.dirty == true

and we can also check store records are modified(Updated) or not.

var storeRecords = store.getRange();

for (var i = 0; i < storeRecords.length; i++) {

    var rec = storeRecords[i];

    if (rec.dirty == true) {

        //Do Operations basedon

    }

}