Run the collector once to generate a single sample of 50 (I have it set on “Fastest”, which is the default state in this share URL). The generated data table correctly pulls in 50 items (rows) from the underlying dataset.
Click “Clear Data” on the collector.
Run the collector again using the same settings. This time, the generated data table displays 50 *empty* rows.
The only way I’ve found to get it to generate new data is to refresh the browser (essentially reopen the share URL).
In case it helps, I’m using the latest Chrome browser on Windows 10.