Php rad classic field value data bind problem

Hi, I report a bug regarding the addition of a form for inserting (add) data in the view page.
I have the CART table, inside the CART / VIEW page I insert an ADD form of the SUBCART table, I use a field to get the id of the current record of the CART table.
Unfortunately the data is not passed to the form field.
I have tried various new and existing projects.
I have tried with with the VUE version and it seems to work.

Hi, in version 3.6 the problem does not recur.