[Address Book Example] Unable to add a new contact

Steps to Reproduce:

1. Build and run the example "Address book"
2. Select Webassembly 6.2.10 as project kit
3. Try to add a new contact

Actual Result:

After adding the contact, the contact is not displayed on the application.

Expected Result:

After adding the contact, the contact should be listed on the application.

Reproducibility: 100%