When creating a transform constraint whose Bone is outside of an IK constraint, but Target is inside an IK constraint the transform constraint moves to where the Target WOULD be if the IK constraint was turned off/mix set to 0. I was curious if this was a bug or simply an expected behavior between constraints that can't be easily remedied.
I can work around this easy enough by just animating the few cases I needed it for without IKs, but in the event this is a bug or unexpected I wanted to make you aware of it. If this WAS intentional (or rather, unavoidable) perhaps adding some kind of warning would be helpful, as it took me a while to figure out what exactly was going wrong.