Soul Guard Bugged? Or intentional?
"Gain endurance effect for 8 seconds after being healed or recovering from a dying state" - Soul Guard's Endurance effect does activate when recovering from a dying state; however it does NOT activate when being healed.
Is this a bug? From my understanding; the perk should work as follows:
If healthy = Endurance effect is = Mettle of Man
If Injured = Endurance effect is = Borrowed Time
@Peanits can you clarify?

Comments
I think "being healed" means having another Survivor heal you from the dying state. You'd always be injured so the Endurance effect would be Deep Wound.