Advanced Search does not show tasks with "no values" in custom field

Hi @Christian_Bailey, can you please forward this to our support team (How to contact our Support Team ✉) along with the URL of the tasks satisfying your search request as I’m unable to reproduce the issue to describe.

In the example below I have created a “Role test marie” custom field. When I search for tasks including no value for this CF, all tasks satisfying this query are returned. Sounds like your issue may be specific to your custom field, but our support team should be able to investigate this further.