Stealth removal in Punishing One unique persist post-defeat

The part of the Punishing One unique that states "Whenever an enemy gains stealth, dispel it, inflict breach on themselves for 1 turn, which can't be resisted, and Punishing One stealths for 1 turn" still applies to enemy ships even after the Punishing One has been defeated. I defeated the enemy Punishing One, thus it's unique should go away aside, but when I stealthed one of my ships with Marauder, I was unable to gain stealth and both Marauder and the ship I targeted for stealth were breached immediately. This should NOT be happening after Punishing One has been defeated as the unique does NOT state it persists after death. There is one line that states enemy imperial tie fighter ships lose 200% CC and Evasion for the rest of the encounter, but that is the only line in the Punishing One unique that should still be around after the Punishing One has been defeated. There might be other lines in the unique that are still persisting after the P1 has been defeated, but I can confirm that the stealth line is still lingering after the ship is dead.