Bundles no longer show the items in the preview, just blank squares, with the total number of items.

I have filled up a bundle nearly full, when I hover over it, I get the little preview, but no items are displayed in the boxes.  I pulled everything out and tried putting several items in alone to see if one specific item caused it to not show anything and that did not change it.  Once an item is in the bundle it does not show up in the preview.