notificationTypes filter not working with 1 filter on V2 API

[marian2js]

The following query returns an empty array of items:

query Notifications {
  notifications(request: { where: { notificationTypes: [MENTIONED] } }) {
    items {
      ... on MirrorNotification {
        id
      }
    }
  }
}

However, if the notificationTypes array includes any other type, it does return the mention notifications.

As a workaround, I duplicated the MENTIONED filter, which fixes the query:

query Notifications {
  notifications(request: { where: { notificationTypes: [MENTIONED, MENTIONED] } }) {
    items {
      ... on MirrorNotification {
        id
      }
    }
  }
}

I can reproduce the issue on Mainnet V2. I'm using profile ID #108433.