Doctor Savage native dreams conversation hidden check bugged

[PaposikG6]

There is supposed to be hidden dialogue option in the Doctor Savage conversation about strange serpent dreams if player has killed the Oyensorm and passed certain skill checks.
This option appears to be bugged. If player talks to Doctor Savage about it before killing Oyensorm, the check appears normally (check doesn't seem to appear if player gets being the serpent dream however).
Link to save: https://drive.google.com/drive/folders/1ydxZUNu_UkDaCOc9uXZt7qPrG4_6r2Tx?usp=sharing

[PhrygianDominant]

Fixed for the next patch.