Hi!
If you order a wing to be defense and combine it with "return home"
and if the carrier is present and intact then such a wing freezes its
motion until an enemy is firing at the wing or at a friendly unit
which has set the owner of the firing unit as enemy in the ally menu.
I found the buggy piece of code and will fix it in the next host (if
Magik will not be too fast with the next release

)
Gabor