Error using editablefields for required fields with Views Bulk Operations (VBO)

In a drupal commerce products administration view I am using Views Bulk Operations and editablefields for a required field (price) formatted editable directly (unchecked "Click to edit").

I have several products with no price value set (created from an product import).
Now I set the price value in 3 of the products and try to enable it via vbo.

I experience the following error.

field is required.
field is required.
field is required.
field is required.
field is required.
field is required.
field is required.
field is required.
...
(comes according to the number of the displayed items)

My guess: editablefields asking for required fields before any operation?!
My workaround: check the formatter option "Click to edit " and it works well.

My request is that this doesn't happen even when the field is directy editable (unchecked "Click to edit ").