A Jira query that we use that is no longer returning results on our dashboard or when run. They appear to be timing out :
Here is one of the query:
assignee was in (user.1, user.2, user.3) after startOfMonth() AND updated >= startOfMonth()
The query on occasion does produce results, but often times out. If you ran it and got results and re-run it after 5 minutes in returns "No issues were found to match your search".