I'm seeing some unexpected behavior from the Microsoft Graph Security Alerts APIin the Graph API.
When filtering by createdDateTime, when no results are expected, it is returning results for today instead of an empty array (as expected).
/beta/security/alerts?$filter=createdDateTime ge 2020-07-26T18:09:31Z
If the filter is changed to eventDateTime, the expected empty array is returned:
/beta/security/alerts?$filter=eventDateTime ge 2020-07-26T18:09:31Z
I'm seeing this on multiple accounts, but not in the Graph API Explorer. This happens in the beta as well as v1.0 API.