SortableHiddenMixin Empty form errors on required fields in empty extra forms

[TheBrko]

When i drag and drop inlines with nested_admin.SortableHiddenMixin i get errors on empty extra forms after saving form !

[lachlancannon]

We've run into this as well. For now I've worked around the issue with a little custom javascript that runs on form submit. But it'd be lovely to see this fixed instead of hacked around. :)

[fdintino]

Does your position field have a default value or is it null=True? If it doesn't have a default value, try setting default=0.