Undo does not display what is undone

[nus-pe-bot]

Steps to reproduce:

1. add n/John Doe ic/S9999999J p/91234567 e/johndoe@example.com a/John street, block 123, #01-01 dob/01.01.1997 g/Male
2. undo

Expected outcome:

Actual outcome:

---

_{[original: gary-lgy/ped#7]}