I noticed this as well. I don't remember this being removed prior to 1.2.6. I did see treasure cards come up in the stash after completing a scenario, and I could sell them from there, but anything that I had duplicates of that didn't come from chests are stuck at this point it seems.
What device are you using? I am playing on iPhone 7+ on the latest Public beta, and haven't had any crashing issues.
It looks like others are having issues with restoring purchases, so I'm glad you got to keep your stuff.
I just updated to 1.2.6 on iPhone 7+, got a notification that I received 125 and 2 chests for trying quest mode, unfortunately I had a party of 4 lvl 40s. Anyone else experiencing this?