Thanks for your interest in Syncfusion products.
I am afraid that I am unable to reproduce this issue with the given information. We are not able to download your sample in the first update because of server problem. I have created a sample based on your screen shots in the second update. Could you use that sample and reproduce the error if any. However you please upload your file from first update again and send us in your next update.For your convenience we have attached a sample Please try this sample and get back to us with more information, so that we can analyze that and provide the better solution.
Let us know if you have queries.