Model Training stuck at Finalizing model...

**System Information (please complete the following information):**
- Model Builder or CLI Version: 16.14.3.2307502
- Visual Studio Version (if applicable): 17.4.4

**Describe the bug**
- On which page of the tutorial did you run into an issue (URL): https://dotnet.microsoft.com/en-us/learn/ml-dotnet/get-started-tutorial/train
- Clear description of the problem: After training finishes, it gets stuck at 'Finalizing model...'. Memory usage by ServiceHub.Host.netfx.x64 grows until it uses up all the available memory on the computer. CPU usage also holds constant around 50%. I have let it run for over a day, which just makes the computer unusable, and it never finishes. I have tried various different configuration options, all with the same outcome.

**Screenshots**

Riproduci il flusso di training del tutorial ML.NET collegato usando Model Builder o la versione CLI 16.14.3.2307502 e osserva il processo ServiceHub.Host.netfx.x64 durante “Finalizing model...”. Il lavoro è completato quando il training termina invece di bloccarsi, mentre l’utilizzo della memoria continua a crescere e l’utilizzo della CPU rimane elevato.

Scritto dal modello di indicizzazione a partire dal testo della issue.