Freezing hearts do not flash when taking freezing damage / "blinking" textures are identical to standard textures

The bug

When taking damage normally, the amount of health lost can be seen flashing in the player's health bar in the form of lighter colored hearts. However, this does not appear for taking freezing damage.

To fix, simply add the flashing freezing heart textures to the HUD icons folder accordingly and point to them for this purpose.