Seems something didn't work fine!
I play with a cleric with the ice storm spell, have 2 cold stones and can use it, the spells are boosted and the charges count down. I try it a few minutes ago and works. But next, I login with the wiz. This wizard have multiple spell stones (more than one of acid, fire, cold & lightning). First I activated a fire stone and try to cast empowered fireball and spell wasn't boosted or charge discounted on the stone, try next with normal fireball: nothing. Deactivating the fire stone and activating one of the cold stones then cast normal ice storm and the same: no boost or charge used.
Then return to cleric, activate the same cold stone before I used and ... didn't work!!! activate the other cold stone that have 10 charges and then work!!!
I return to the wizard, try all the fire stones and only one of them works! The same for cold stones, just one works, the others have no effect, and as the cleric, the stone that works changes when relogin, seems the bug is having more than one stone of the same damage type on the inventory!!!
Anyone can try too? Thanks!
7witches!