Hi Israel,
Thank you for your interest in Syncfusion Products.
I am afraid that i am not able to reproduce the reported issue. Also i have hosted your sample in our server and it can be seen in the below link.
http://files.syncfusion.com/samples/Tools.Web/7.3.0.20/F90153/Main.htmI have also provided you with a video of how i tried to reproduce you issue and it can be downloaded from the below link.
http://files.syncfusion.com/samples/Tools.Web/7.3.0.20/F90153/DDCC_video.zipPlease have a look at the above sample,video and if still the issue exists, could you please try reproducing it in the above sample and send us the modified sample so that we could sort out the cause of the issue and provide you a solution?
Please let me know if you have any other concerns.
Regards,
Lakxman Kumar C