Github Copilot App stopping midway more and more frequently

Around a week ago, Github Copilot App, in many different sessions, started to stop processing queries midway. Instead of performing operations, it just answers "I'll do " and stops there. I have to prompt it with "do it", "keep running", "go on", more and more frequently. This reduces the usefulness of having multiple sessions, preventing parallel work from occurring in different unattended sessions.
If I ask it why it stopped, I'm getting answers of the form "I stopped incorrectly after a tool-discovery failure.". Also got once that it stopped before the model returned an answer instead of a tool call. So seems something changed with the model or system instructions causing less autonomous usage.

Non vengono indicati file, test o punti di ingresso del codice. Inizia riproducendo il comportamento in più sessioni Copilot App non supervisionate e confronta le sessioni che si fermano dopo aver detto che agiranno con quelle che continuano; è completato quando le query completano le operazioni degli strumenti previste senza prompt successivi.