Ultron drop tile resolution with Classic Mags

Ultron drop tiles have been known to explode before resolving a match that would get rid of it. Rather then explode on ultron turn they explode on the players turn.

When I used CMags blue power it sent a drop tile to the bottom and it didn't explode. I figured their was a hidden update that changed drop tiles to blow up on Ultron's turn. To avoid the damage I used a TU ability (3* Thor Yellow). The drop tile blew up dealing damage before the TU began to fire.

Wanted to let you know about this inconsistency either way.