First time player, is this a glitch? *SPOILERS*

Playing AW2 for the first time and loaded the game at the watery trailer park after investigating Sagas trailer and see'ing Mulligan walk to Sagas left and out of camera. I saved then turned it off then loaded the game when I played again. As I can come out the cabin Mulligan appeared and slide into view like a prop out of place from Coffee World, except when walking up to him I dont see anything underneath him and I can't aim and shoot him but I aim and shoot anywhere else around him. Very weird game so I'm not sure if this is suppose to happen? Seems a bit to weird and out of place even for this game.