Item disappears on unsuccessful upgrade

[Theho]

When an item upgrade is unsuccessful, I lose both the item itself and the items and gold used to upgrade it. According to the wiki (You are not allowed to view links. Register or Login), I should be able to keep the item:

if it fails, only the item and gold needed for upgrading are lost, not the item

This bug already occurred during the Limited Access beta.

I hope this is a bug and not working as intended - it is very frustrating trying to upgrade gear at the moment. In fact, it is easier to keep the gear at levels 3-4 because it is too punishing trying to upgrade to 6-7+.

Example:

I want to upgrade "Ghost Shoes +3" to "Ghost Shoes +4".
This costs 1 Element Shard, 1 Blue Wolf Fur and 1150 gold.
It has a 69% chance to be successful.
I upgrade the item but it fails.

Expected result:

I lose the 1 Element Shard, 1 Blue Wolf Fur and 1150 gold, but get to keep the "Ghost Shoes +3".

Actual result:

I lose the 1 Element Shard, 1 Blue Wolf Fur and 1150 gold, and I also lost the "Ghost Shoes +3".