Thanks for contacting us and for reporting this issue.
In fact, this is not the default behavior of the controls. However, we discovered an issue in our animation system which occurred rarely and caused all animations to stop. The symptoms you experience on your side are very similar to those many of our customers have had due to this issue. To solve this issue, you can turn off the animation support by setting the following property:
You can also try downloading our latest version to see whether this issue will persist. If the issue persists, I would kindly like to ask you to send us a demo application that we can use to reproduce the case and see how we can help.
Thanks for your time and do not hesitate to write back in case you need further assistance on this case.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.