Is there eny chance that there will be a mod/patch of some sort, that fix the grafic problem where you cant see picklocks, Ore, and so on, in your inventory???
As far as I know, is Gothic incompatible to Antialising. So just dissable it for Gothic (in the settings of your grapic card) and the inventory should be working fine.
I don't think, that there will be a bugfix oder mod to fix this problem...