when copper golem took some enchanting tables initial quantity 64 it took some (exact number 12) was just looking at me

I put a stack of enchanting tables in the copper chest then copper golem takes some of them and does not puts them in my chest. It was just looking at me. Sometimes it opens the chest makes the animation but still holds the stuff in the hand. I recorded a video of it. And on top of that after a while my chest broke with dropping all the existing items. Unfortunately I couldn't record the breaking