Custom Script for the Form view no used when using DocType Layout

Hi, is it normal that custom script for a DocType form view is not used by respective DocType Layout ? The custom script is of course declared in and worked perfectly before using DocType Layout. I’m saying that because custom script for list view works well and overriding doctype class in Python works also well without changing anything.

doctype_js = {
    "Employee": "overrides/employee/employee.js"
doctype_list_js = {
    "Employee": "overrides/employee/employee_list.js"
override_doctype_class = {
    "Employee": "myapp.overrides.employee.employee.CustomEmployee"

Using client_script field in DocType Layout works, but is not really practical when making a lot of customizations.

Thanks in advance if it is a bug…