GameLift instance disk space usage reaches 100% after ~1 week : whitewater folder in cause

Hello, We experienced repetitive issues on our production real time matches: every week or so, players were not able to play in real time matches anymore. After checking the logs and metrics, we noted that the available game sessions were either dropping to 0 or were not being reported anymore. Our auto-scaling policy is not triggered though since it is based on the percentage of available game session which somehow is showing healthy... (see image below) This also seem like a bug but that's not the one I want to treat in that question.

The Event tab was also flooded with crashing processes. Our workaround is to manually increase the number of desired instance, and eventually, the crashing instance is automatically killed by the system. And we're good for another week or 2 of peace.

Recently, we managed to find out that the issue happens because of storage capacity reached:

10/3/2023 7:52:15 AM [ERROR] Error caught in the beginning of Main!
System.IO.IOException: No space left on device
   at System.IO.FileStream.WriteNative(ReadOnlySpan`1 source)
   at System.IO.FileStream.FlushWriteBuffer()
   at System.IO.FileStream.FlushInternalBuffer()
   at System.IO.FileStream.Flush(Boolean flushToDisk)
   at System.IO.FileStream.Flush()
   at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
   at System.IO.StreamWriter.WriteLine(String value)
   at Z3.Gameplay.Backend.ConsoleLogger.Log(String message)
   at Z3.Gameplay.Backend.Program.Main(String[] args)
************************************************

And we know that the folder which takes all the space is whitewater which we don't have access to, and is managed by GameLift, as showed in the first image.

That's why we're asking for your help to help us investigate why this folder ends up taking all the space or understand what can we do on our end to prevent this. Please let us know if we can provide any more information. Thank you.