We have implemented this feature when you are developing with Sitefinity locally. Thunder will not disconnect the current user if Sitefinity is hosted on the machine which is running the Visual Studio instance.
However, we have not implemented this feature when you are trying to access a remotely hosted Sitefinity project. We have discussed this with the team but we still need to consider some cases before we start with the actual development.
Please let me know if I can be of further assistance.
the Telerik team
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