WatchOS: Custom "Unit Name" missing on Notifications and Apple Watch

iPad Air M1 & Apple Watch S5
Latest iPadOS / watchOS 10.6.1
Habit Settings / Notifications / Apple Watch App

Steps to create the scene:

1. Create a new habit or edit an existing one.

2. Set a numeric goal and change the "Unit Name" to a custom text (e.g., "pages").

3. Save the habit.

4. Wait for a notification from this habit or open the Apple Watch app.

5. Observe that the displayed unit is the default "times" instead of the custom "pages".