(macro)Quantum phasing/tunneling is a scary but necessary trait for the bumblebee species so the only way to be safe is to keep thick enough glass panels that the chance becomes as close to zero as is comfortable for you. I use 20 mm glass panels at home due to bad experiences, but your preference may vary
The original single player is so bad I’m certain it was just cobbled together as a demo of the engine and for inspiration for user content. Then the team had time to develope proper story with the expansions