Should a failed pre-update check return an error?

[yoshiwarab]

Hi! I'm testing a mutation (update_<table>_by_pk) that should fail a pre-update check that I've set up. While testing I can see that the update does not get saved, however the API response does not show an error. Instead, the response just returns null for the update_<table>_by_pk. Is this expected behavior or a bug?