In 0.8.0 I recieved a Mithril Great Spear as a mission reward.  Everything seemed fine at first, but later I noticed it didn't disappear from the Inventory, even though it was given to a character.  In fact I was able to give it to multiple characters... kind of.  If I mouse over the spear on any character after giving it to more than one, no tooltip comes up.  Also the weapon apparently cannot be switched out for another one after that.

This weapon has 'Slots: Right Hand, Left Hand, ITEMSLOTNO_STACK, ITEMSLOTENCHANTABLE' which none of my other weapons have those last two flags.  It says it has a Mithril blade, Crystalized Ether encrustment, and a Steel handle if that matters.

Also there is a purple suit of armour named 'Item Name' with an amount of 0000 in every category of inventory, but it is not assignable to a character and seems to cause no problems.

Edit:  I just got an Iron Great Spear with the same issues as above, so I guess it is all Great Spears.

Thank you for this.  I disassembled the great spears I had, but when I reloaded an older save, I saw that those spears were not changed.  Unfortunately, the character who previously had that spear seems to be permanently screwed up.  A Dragon Knight with 143 Physics doing 30 damage to goblins with a mithril club... and 3 damage bare handed.  There was no visual indication of any curse on that spear, but... :P

I also had that character and another one that donned some armour that had Warlock and Vampirism on it (but no curse) start missing their combat rounds entirely.  They were at the end of the action list, but just never acted, the game just went to the next round.  I disassembled that fking armour as well, but it didn't help.  Now when I tested after your fix they both at least act in combat, even though how the fix would affect either character I don't know.  I like what was in the patch, but there are bugs somewhere under the hood.