White poodle losing her pigmentation

My lovely white Standard poodle came to us at 10 weeks old in January of 2023 and had very dark black pigmentation on her feet and nose/face. In October her nose started to lighten, and I thought that was ‘snow nose’ but now I’ve noticed all the colour has left her feet too!

She has a poultry allergy/sensitivity that has been fully resolved with diet change since November and is now in excellent health, confirmed by our vet in February.

Is the pigment loss a concerning health issue, or common/benign?