As per forum post:
https://fractalsoftworks.com/forum/index.php?topic=21576.msg488573#msg488573
This mod has an annoying side effect, if you select "Car regroup wings" as automated behavior then it makes it so Regroup stance can no longer be selected.
Can not be selected by player or by AI, which means all carriers are stuck in engage mode and lost all their 0-flux boni PERMANENTLY.
I was wondering why all my carrier were so slow, its because of this setting :(