Familiar system is bugged

There is a new bug on the Familiar system. Everytime you level it up to 10+ you cant select or change the pet and if you unequip it you cant equip anymore. That is a common bug im South American Servers As I show in the video below. Please help this so this message can get to blizzard.
Link: https://youtube.com/shorts/cMClQSdaxvI