It is a known problem, but I haven't seen any thing done to fix it. Maybe it'll happen later. At least I think the devs know about it. I'm sure that I've reported it before.

You can get up to logistics of 40 using that bug. When logistics is low, starbases, shipyards, and planets can have up to 40 logistics worth of defending ships. If your logistics is higher than that, then those places can use those values instead.

The problem is that the game doesn't check if you are ejecting a group of ships allowed on starbases (and the like), but is larger than what is allowed on the field (because your logistics is low). Consequentially, you can abuse this bug to produce a fleet that you wouldn't be able to produce anywhere else.