Upgrading Alchemy Stone Bug

When I had my alchemy leveled up to Artisan I tried making some alchemy stones then I got some Imperfect stones of life, protection and destruction.(I made lots of stones but only got 2 destruction) I increased their exp more than 150% then tried to upgrade it. In upgrading the stones it only says that failing to upgrade the stone loses its exp but instead it broke(the stone vanished) even when the notification said that "Growth Failed. Alchemy stone exp decreased." also there were times when I upgrade it with the same notification it upgrades to the next level. When I read stuff about how to upgrade the alchemy stones it says that upgrading the stone at Resplendent and above will have a chance to destroy the stone but my stone was still Imperfect and still it got destroyed/vanished.

 

+1 Maybe iam the only one who lost more than 100 alch. stones trying to lvl them up .. yes i reported this problem at the bug reports but still not fixed , i hope they fix it soon

 

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