Bundle tooltip doesn't show custom name

Steps to Reproduce:

1. Enable the Bundles experiment
2. Rename a bundle
3. Select it in the hotbar
4. Hover the item in the inventory

Observed Results:
The bundle retains its custom name when displayed above the hotbar, but shows "Bundle" in the inventory. Longer names cause the text, fullness bar and slots to be moved, but without the tooltip extending or the name changing. The name and tooltip are only accurately displayed when an item inside the bundle is selected.

Expected Results:
The item tooltip accurately shows the item's current name.

Notes: