SPN support for PBI Dataset

Hi!

Has someone been able to set SPN for Power BI dataset source credential and been able to refresh dataset on SPN scheduled after an hour or so?

According to this it should work:

Service principal support to connect to data in Dataflow, Datamart, Dataset and Dataflow Gen 2 | Microsoft Fabric Blog | Microsoft Fabric

First refresh works ok, but later (after an hour) scheduled refreshes are not working.

Is there still some problem with e.g. oauth token expiring?