title: Kendo grid column/filter menu disappears after using datepicker
body: <p>In my Kendo grid I have a data set that includes a date. The date is filterable and includes the built-in date picker. </p>
  
  <p>When you click the date picker and subsequently pick at date from the calendar pop-up, the cursor is inevitably below the original column pop-up menu that shows the date-picker icon and input field. </p>
  
  <p>Therefore, the pop-up disappears before you can submit the filter query and requires you to go back into the column menu, select filter, where you will see the date that was previously chosen. </p>
  
  <p>Then you can press submit and it will filter on the date.</p>
  
  <p>This behavior is quite annoying and I was wondering how I could keep the original column menu pop-up displayed so the user can then click submit. As it stands, the only way to do this is to very quickly move the mouse back up into the original pop-up after clicking on a date!</p>