Latest update added that feature, yay.
But, it removed the ability to select an item and see what you have in inventory. Example - I got a reward just now that included a 3rd rate booster pack where you can pick any piece. Before this change it displayed how many of each piece I had so i can make a good choice. After, it doesn't state it anywhere.
Another example - After opening a dup 7-star, I get 250 of the super duper shards, but when you pick it it used to tell you how many you had in inventory. Now nothing.
Don't have a pic from before but here is after.