In the latest API (1.12.0) is finally possible to bypass the 30K rows limit by setting the dataReductionAlgorithm to window and by checking the options.operationKind during the update (https://microsoft.github.io/PowerBI-visuals/api/references/fetchmoredata/).
Has anyone managed to make it work? In my project I never receive the VisualDataChangeOperationKind.Append also if I set a very small number in the dataReductionAlgorithm config. I only receive the first VisualDataChangeOperationKind.Create.
Thanks