These helper functions rely on the undisturbed contents returned by returndatasize/returndatacopy. Should the call sites undergo some changes, they may not function as intended. They are used in numerous functions.
This is further complicated in _assertIsValidOrderStaticcallSuccess which is another layer hiding this assumption.
Context: LowLevelHelpers.sol#L46, LowLevelHelpers.sol#L103, ZoneInteraction.sol#L157
Issues can arise if:
An example use case is below:
Simple way to make this fail:
Document these assumptions as a warning and carefully test these cases.
