Webpage stops to respond after selecting a date using webdriver click updated - selenium-webdriver

Question

we have a webpage with 2 date calender one is a current date the other is referencedate which autoupdates itself to display a day less than the current date.
issue-After selecting a date from a calender using webdriver click the other
calender which had to update the date automatically, does not update anymore.
The same actions if performed manually works.
Has anybody faced a similiar issue, this has become a blocker since with the autoupdate not working the entire application workflow fails.
removed sensitive data
package pages;
import java.util.Calendar;
import java.util.List;
import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.interactions.SendKeysAction;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import com.thoughtworks.selenium.Selenium;
import com.thoughtworks.selenium.webdriven.SeleniumMutator;
import com.thoughtworks.selenium.webdriven.commands.SeleniumSelect;
import utils.Waitutils;
public class CalenderPage {
WebDriver driver;
static WebDriverWait wait;
public CalenderPage (WebDriver driver){
this.driver = driver;
}
public void cobDatepick(String date){
int count=0;
WebElement cob =driver.findElement(By.xpath("//*[#id='mainview']/div/div[2]/div[1]/div/options-panel-directive/div[2]/div[1]/div/div[1]/date-picker/div[2]/div/span"));
cob.click();
WebElement mLink = driver.findElement(By.xpath("//button[contains(#id,'datepicker')]"));
String date_dd_MM_yyyy[] = (date.split(" ")[0]).split("/");
int yearDiff = Calendar.getInstance().get(Calendar.YEAR) - Integer.parseInt(date_dd_MM_yyyy[2]);
mLink.click();
WebElement pLink = driver.findElement(By.xpath("//*[#id='mainview']/div/div[2]/div[1]/div/options-panel-directive/div[2]/div[1]/div/div[1]/date-picker/div[2]/div/ul/li[1]/div/table/thead/tr[1]/th[1]/button/i"));
if(yearDiff>0){
for(int i=0;i<yearDiff;i++){
pLink.click();
}
}
List<WebElement> months1 = driver.findElements(By.xpath("//*[#id='mainview']/div/div[2]/div[1]/div/options-panel-directive/div[2]/div[1]/div/div[1]/date-picker/div[2]/div/ul/li[1]/div/table/tbody/tr/td"));
months1.get(Integer.parseInt(date_dd_MM_yyyy[1])-1).click();
List<WebElement> dates = driver.findElements(By.xpath("//*[#id='mainview']/div/div[2]/div[1]/div/options-panel-directive/div[2]/div[1]/div/div[1]/date-picker/div[2]/div/ul/li[1]/div/table/tbody/tr//td"));
int total_nodes = dates.size();
for(int i=0; i<total_nodes; i++)
{
String dat = dates.get(i).getText();
if(dat.equals(date_dd_MM_yyyy[0])&& count>0)
{
dates.get(i).click();
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("window.document.getElementById('date-picker-to').setAttribute('value', '30/06/2016');");
}
if(dat.equals(date_dd_MM_yyyy[0]))
{
count++;
}
}
}
}
The above class is called in the testscript
#BeforeTest
public void setup() throws Exception{
driver = new AppDriver("ie").getDriver();
driver.get("https://xyz");
driver.manage().window().maximize();
onCalenderPage = new CalenderPage (driver);
Waitutils.waitforCompletion(9000L);
}
#Test
public void test(){
onCalenderPage.cobDatepick("30/06/2016");
}