[Bug] Content disappears, if Watermill is broken

So i dismantled my Watermills (using a Pickaxe) and after they were broken, their contained Waterbuckets were not laying on the Ground. Then i used my Elemetal Cutter to pull the Items and there were still no Buckets.

And no, the Items were not just invisible, otherwise i wouldve collected them (three Invslots were empty). And its happened in SSP.

BUMP. Just happened in IC² 1.103

I finally found the error. I used the Pickaxe of the Core, which has special smeltingabilities, what caused the Problem. So it was a Thaumcraftbug.

Nice that you helped me...