Problem solved -- sort of. There is a flaw in the design of the "Connect to data" screen. The initial screen shows a listing of Saved data sources. That list can grow quite long and take up most of the screen. That was the case for our user. When he connected to the Tableau Server Data Source the list of Saved data sources was so high up on the screen that it was covering up the list of data sources on TS. However, there was still enough white space below the TS header that it appeared there were no data sources. Unfortunately, you cannot manually adjust the divide between your TS data source list and the Saved data source list to uncover the TS data sources. (See attached screenshot)
We discovered the flaw by deleting some of the older Saved data sources from the list. As that list grew smaller, the list of TS data sources were eventually exposed. I am not sure what will happen when the list of TS data sources is long enough that it collides with the list of Saved data sources below.
This is something the technical team will need to address.
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