Copper golem and its items are invisible in some resource packs

Hello Mojang, The new update is great but I have a bug to report which is that, every blocks work properly but the new spawn egg has a bug {The spawn egg appears Invisible on the menu} and the new mob (Copper Golem) It is invisible like literally! it works properly it opens the chest everything works but the main copper golem doesn't. I hope that Mojang fixes this issue and the other features are gold! Love from India!