Wraith's Arsenal OblivAeon Bug?

An OblivAeon game with Freedom Tower as the Battle Zone 1 Environment. 4 heroes were there, the 5th was in Battle Zone 2. Wraith's Arsenal states that if all players draw a card it is destroyed. The 4 heroes present all drew cards and Wraith's Arsenal stayed in play.

Now, am I right in thinking that the card should have destroyed itself because the hero in the other Battle Zone is considered not in the game? Or is the fact that Wraith's Arsenal says "player" not "hero" means it ignores the general rule about cards in one BZ not acknowledging cards in the other BZ?

Sounds like a bug. The only players that card knows about are the ones in that battle zone.

I remember I came across this issue the first time I played OblivAeon on the tabletop and wasn't sure how to handle it.