This appears to happen easily after a statistic version is updated while testing with just one player.
When calling /Server/GetPlayerStatistics and requesting a single statistic name with a specific version sometimes the response will have an empty array for Statistics when there should be a value. There is no error code to indicate the data might be wrong.
This can happen between multiple calls of actually getting a value for the same player for the same statistic version.
Do you know why this would be happening? Is it something that can be fixed?