Unfortunately I was not able to reproduce the issue. Could you please elaborate a little bit more on your scenario. Also, if it is possible, could you please send a sample project reproducing the issue. Meanwhile, do you manage to reproduce the issue if you style bindings. I am attaching a sample project that demonstrates how to select/check/expand items using style bindings. If you still experience the same issue, contact me as soon as possible.
the Telerik team