Replica Covenant still applies energy shield cost with Blood Magic

Ref # 639,518,860

I have Blood Magic (and Sanguimancy) to have my skills cost life instead of mana. From the wiki page on The Covenant (https://www.poewiki.net/wiki/The_Covenant) it says Blood Magic will "cause the mod [Skills gain a Base Life Cost equal to 100% of Base Mana Cost] to have no effect" so given the Replica Covenant has the same mod but for energy shield, I was expecting there to not be an ES cost. Given the language is almost identical I wasn't expecting it to be any different.

Steps to reproduce:
- Slot in an active skill with a mana cost
- Allocate Blood Magic on the tree
- (Possibly relevant: also allocate Sanguimancy from the Warlock of the Magi wildwood specialisation)
- Equip the Replica Covenant

Expected behaviour: Skills do not gain an energy shield cost.

Actual behaviour: Skills gain an energy shield cost approximating twice their (unmodified) life cost.

I also tried slotting in Lifetap which apparently also works for non-relica covenant, that didn't work either. If this isn't a bug, please let me know.