We recently using Dynamic forms for custom objects. The issue we have here is for a specific profile "Created By Id" (which is a lookup field from "User" object) and Last Modified By Id fields were not saving up while trying to create a record (there is no criteria for those fields). See the screenshot
Checked both fields accessibility related to profiles and they are same for all profiles as "read only". Also checked User object permission for issue profile against other profiles and it is same. Interesting part is if the form is not dynamic form then able to save the records without any issue for any profile with Created By Id and Last Modified By Id values populating with correct values of user who created the record.
Not sure what else do I need to check. Thanks in advance.