I am sorry to find you experience such a problem and completely understand your frustration. I just tried to replicate it locally though and this scenario seems to work just fine for me. I also checked your account and noticed you haven't downloaded a recent version of the product, instead you should be running a build from July. Is that correct? If so do you plan on upgrading to the latest build we released in early December? You can find details about it from the downloads page in your account
We can also check the exact scenario with your project if you can send it to us via a private support ticket. Just pack a couple of tests you get this problem with and we can test that with the latest version for you.
Looking forward to hearing from you,
the Telerik team