Treasure Wars Shop takes more resources than it should

Affected Service (Game name, hub or global):
Treasure Wars

What is the bug?
When I split my currency (Diamonds in the video) into stacks, with one stack not enough to pay for the item being bought closer to the first inventory slot and another stack that has enough to buy the item, the currency will be taken from both stacks, with all being taken from the first and the actual price from the second. In the video, I had 6 Diamonds from for an Iron Sword and a Bow, but I lost all 6 when I bought the sword.

Screenshots and/or video:


I know this is a old thread but it takes less resources for me.I was playin tw today bought 8 autobridgers when I have three stacks of gold.Which was confuzing