After the houndeye explosion knocks out a section of bridge and you have to solve the jumping puzzle. I missed a jump and had to load to right before the jump. Upon load, I noticed the reminants of the explosive boxes were hanging in mid-air.
Screenshots:
https://steamcommunity.com/sharedfiles/filedetails/?id=96305513
https://steamcommunity.com/sharedfiles/filedetails/?id=96305535