As discussed on the forum: https://facepunch.com/showthread.php?t=1497739&p=49957704&viewfull=1#post49957704

Video of the issue: I bound a key to print the output to the chat.
bind - "lua_run_cl chat.AddText('Global: ', tostring(EyePos()), '\nPlayer: ', tostring(LocalPlayer():EyePos()),'\n')"
Format is:
Global: EyePos()
Player: LocalPlayer():EyePos()

It seems that the EyePos() vector gets updated every time a prop is spawned:
https://www.youtube.com/watch?v=CoPzV2AMooU