It's a great feeling when succesfully anti-ganking. Good stuff. For whatever reason, your opponents in that match applied multiple revenge tags on you without confirming any damage. They made plenty fight-losing mistakes, but you were able to capitalize on that and punish it. Vengeful Barrier has a bug where all the shields gained from entering revenge, are kept after revenge has expired. You were blessed by that in this anti-gank, making you even more unkillable :^)
Pretty sure it isn’t a bug because it’s only applied after the second time during a fight, I think it is intended because in some ways it makes sense like how Jorm keeps all his revenge shield after landing a hammer slam against an amount due to his second feat.