Board Game Arena

Table link: https://boardgamearena.com/4/arknova?table=440581553#

In this game, my opponent played only 1 elephant but got 3 end-game cards even when the game ended and got the conservation points for each of the three end-game cards. Does anyone know how this happens or if this is a bug? ( I also played one elephant in my zoo so it is impossible that he played both elephants and released one)

From the replay:

Move 194 : 8:15:55 PM
your daday plays African Bush Elephant for 30 and places it in a size-5 enclosure

Move 487 : 8:42:22 PM
your daday plays African Bush Elephant for 30 and places it in a size-5 enclosure


They released the elephant, then scavenged it from the discard pile, then played it again.