It seems that you have been able to resolve your issue. Is this the case?
Furthermore, we would like to know more about this incident. Have you been able to reproduce this issue or was this an isolated incident? Did you experience any other connectivity issues at the time? If this is reproducible on your system, can you share any other observations about this behavior such as any relation to other AppBuilder/Telerik Platform actions, the length of your AppBuilder session, etc.