Water Breathing effect duration is not shown as infinite when Turtle Shell is equipped

The bug

When a player equips a turtle shell, they receive the Water Breathing status effect indefinitely until it is removed, or when underwater.

Effects with infinite length are denoted with an infinity symbol in the inventory screen. It'd be expected that an infinity symbol would be used here, since the effect will never expire with time alone. This, however, does not happen.

How to reproduce

1. Obtain a turtle shell
2. Equip
3. Note the duration of the Water Breathing effect while the turtle shell is equipped
4. Now remove the turtle shell

Expected results

For the duration that the turtle shell is equipped, an infinity symbol would be displayed under the Water Breathing effect to indicate that the effect never expires naturally. A finite time value would only be displayed and start ticking down once the helmet is removed.

Actual results

A duration of 10 seconds is permanently displayed instead while it is equipped, despite the effect lasting far, far longer than 10 seconds.