I was playing Undead, got the tier 6 card Kel’Thuzad and got it Golden, left of it was a Golden Mummifier with taunt and divine shield (was playing George), and right of it was a Golden Eternal Knight with also taunt and divine shield.
End of turn, the left one was resummoned in exact state as before, but the Knight was damaged, no divine shield, no taunt. Bug?
Deathrattle and reborn effects will trigger before kel’thuzad will resummon the minions it has destroyed. The reborned Eternal Knight got summoned first and the new copy couldn’t be summoned as there was no room left.
You have to be careful with your board space management when playing that card