Symptoms
You deploy a Microsoft Skype for Business Server 2019 topology, and after few days, you find that the Windows fabric tracing folder C:\ProgramData\Windows Fabric\Log\ consumes more than 60 GB. It's expected that the folder shouldn't use that much space and not steadily increase.
Resolution
To fix this issue, install the September 2020 cumulative update 7.0.2046.244 for Skype for Business Server 2019, Front End Server and Edge Server.