Hey guys while looting the sky temple, I found a bug. Not sure if it is re-producible by others but I was able to do it after re-loading my save every time. It can be used to potentially get infinite of the items and by selling them infinite cash. Also the Animat pet has been buggy for me like that the whole time .
The bug is done by right clicking the grimoire once and then left clicking anything else (except the money pile which breaks the bug).
Here is the video: https://www.youtube.com/watch?v=vA6p4E0YSYk