Child Table Column Width not changing for custom fields

The recent update made the javascript unable to change the column widths of a custom field in a child table.

Using the Customize Form to edit the column width of the custom fields of the child table does not save the value after pressing Update.(It reverts to 0 for custom fields)

Fields that were already there in the child table(via doctype) can have their column widths changed.

Question is, is there any way that the column widths can be changed without having to edit the doctype?