DateTime returned by Tasks Rest API not rfc3339 compliant

Using the SpringBoot Example App with Rest client enabled, queries to the task endpoint return times like this

2021-05-10T14:36:44.418+0200

this is not rfc3339 compliant, it should look like this

2021-05-12T12:34:34.720+00:00

This is creating problems with clients generated via openapi generator as i now have to “hack” the generated ApiClient to accept that non standard format for task queries.