If you have Giant's Knife equipped and break it, your B button icon will change to the broken sword icon, but the icon on the equipment subscreen does not change. It stays on the full sword icon.

Footage: https://cdn.discordapp.com/attachments/936124566764392510/997918460531200021/2022-07-16_09-34-57.mp4

Tested on release 3.0.0. Bug was also present as far back as develop build 192