Unseen Presence, the level 2 power for Obfuscate states (emphasis mine):
The vampire remains ignored indefinitely unless someone deliberately seeks him out or he inadvertently reveals himself.
So far so good. You can be Obfuscated, altering people's mind, buy if someone is looking out for you, they can "break" the effect.
But the level 4 power, Vanish from the Mind’s Eye says that you can disappear from someone's face (you can make them forget that you were entirely there, but not always) and then says:
When fully invisible, the vampire is handled as described under Unseen Presence, above.
So my question is: If the vampire disappears in front of someone and that person says "Hey! where did he go?", the vampire would immediately appear before his eyes? It seems like the power is not too strong if that's the case. Is this correct? or I am misreading something?