Inversion values are not set as readonly on sao

When testing review30431002 I noticed the domain inversion values are not show as readonly and not correctly set when creating new records in sao.

Testing the same review in GTK client works as expected:

1. Template value is enforced and set when creating new records.
2. Template value is readonly for existing records.

assigned to @pokoli

added sao type::behavior + 1 deleted label

Here is review26581004 which fixes it.

added 1 deleted label and removed 1 deleted label

New review26581004 at https://codereview.tryton.org/26581004/#ps1

I think I have found the problem. It is in the Group.new_ method when calling default_get which is async but Screen.new_ is not waiting for it to call display.
I'm working on a new patch.

assigned to @ced and unassigned @pokoli

added 1 deleted label and removed 1 deleted label

Here is review32791002

added 1 deleted label and removed 1 deleted label

review32791002 updated at https://codereview.tryton.org/32791002/#ps10003

Thanks, review32791002 fixed the bug for newly created records, but the issue is still present when editing existing records. Here are the steps to reproduce:

1. Create a product template with two variants.
2. Open the relate action from the template to the variants.
3. Open one variant form.

The template field is shown as editable, but in should be shown as readonly as in the tryton client.

Indeed the issue of msg30338 exists also in tryton.

added tryton + 1 deleted label and removed 1 deleted label

Here is review30771002 for tryton.

New review30771002 at https://codereview.tryton.org/30771002/#ps1

added 1 deleted label and removed 1 deleted label

review30771002 updated at https://codereview.tryton.org/30771002/#ps20001

review32791002 updated at https://codereview.tryton.org/32791002/#ps30001

review30771002 updated at https://codereview.tryton.org/30771002/#ps40001