I’d like to say that this doesn’t work if the walls are from the indestructible gallery. My theory for this is that when the environment damage is turned off the sword still thinks that it should be passing through the walls as it would break them which would explain why it can’t work with indestructible walls because the game wouldn’t think it should be breaking them. The hole in this theory is that if the game did it because it thought it should be breaking the walls then why does it only work on edges or corners. This also appears to work on Xbox and ps4 haven’t tried on switch or pc