Dungeon Chests no longer differentiate between trapped and normal chests, they are all just say chest now.
That’s how it’s supposed to be.
It was in the 1.6.1 patch notes, you could’ve read those when you noticed something changed…
It was originally a bug when it differentiated. They fixed it now. This is how they intended it.
I’m about done with opening these chests, your more likely to receive damage than an award. If it weren’t for the very rare possibility of getting that 100 diamonds reward, I wouldn’t do the dungeon except to do enough to complete my daily quest.
Get as many pick locks as you can, then it’s not so bad. I always go to a chest unless I’m on a reset.