Error "Date header doesn't conform to the required format" connecting through the proxy

Attempt to connect from behind the corporate proxy fails.
Using connection policy:
`
ConnectionPolicy policy = ConnectionPolicy.GetDefault();
policy.setConnectionMode(ConnectionMode.Gateway);
policy.setProxy(new HttpHost(...));
`
Leads to the following error when querying the DB:

com.microsoft.azure.documentdb.DocumentClientException: Message: {"Errors":["Date header doesn't conform to the required format. Please ensure that the time is provided in GMT and conforms to RFC 1123 date-time specifications."]}

This is a showstopper for us as we need to connect to Consmos DB from the corporate network.