We have difficulties to reproduce the issue you reported. Could you shoot a short video so we can take a look at what's actually happening or just provide us with some more detail instructions.
Is there a chance that your internet connection becomes slow at times and it takes too long to fetch all the required data? If you click and wait long enough, is the data get received at the end? If this is the case, you could introduce some kind of progress bar which indicates that a long running operation is being processed.
Ivan K. Ivanov
the Telerik team
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