Farie82

**Issue Description**: The mobile docking ports keep a hard reference to the last caller. `/datum/controller/subsystem/shuttle/proc/moveShuttle` is the proc which sets it. ``` [2022-10-05T20:51:06] Found /mob/dead/observer [0x300003b] in /obj/docking_port/mobile's [0x200057f] last_caller...

**Issue Description**: As the title suggests. Somebody having the jump to mob window open as an observer will cause all mobs on the server to fail GCing. I also managed...