Placing the containment chalice underneath another block will delete the other block
It probably need some check for clear area before placing,
deletes blocks with nbt and also bedrock
Modpack : A Grim Life 2 1.1.2
astralsorcery-1.12.2-1.7.2
forge-14.23.0.2528

This was fixed already in 1e11df6, update to 1.8.1 or higher.