Corrected a bug on the attribution of the 'User roles' default application to a created user group on role creation.

base_user_role/models/role.py

@@ -32,6 +32,7 @@ class ResUsersRole(models.Model):
         default=lambda cls: cls.env.ref("base_user_role.ir_module_category_role").id,
         string="Associated category",
         help="Associated group's category",
+        readonly=False,
     )
 
     @api.depends("line_ids.user_id")