When someone is disappointed, or angry, or upset with you (whether it’s your fault or not), they may lash out.
They may make derogatory comments about something you do or have, or like.
I don’t know whether it’s them trying to make themselves feel better, but just let them. Even if it’s related to something you can’t control, or you feel it is unjust.
Don’t react. It’ll only lead to more bad feeling.
Things will be back to normal shortly.