EDIT: Turns out you can't drag&drop NoName items. Please report the bug normally TL Bug Reporting Forums including shift+f9 output.
See also this post by Genele.
Hey.
If you've found a NoName item, please retrieve information as explained further down this post, and report it in the TL Bug Reporting Forums.
To retrieve the necessary information about such an item, please /tell Itemsbot !item stats <drop item here>
Itemsbot will then give you the information necessary for the devs to figure out which item wasn't exported with the latest TL build, so they can fix it.
Here's an example, with an existing item. click (I didn't find any NoName items in my inventory or backpacks)
The interesting information is the LowID, HighID and QL.