Falling Of Game Map

[Shineshizu]

I encountered this while i was playng a survival mission against grineer on saturn (i cannot be more specific, since i'm having login issues and cannot check)
while i was running, i passed trough the floor of the map,  starting to fall almost endlessy into pitch back, till after a very long fall, i died.
i reanimated, and the game reanimated me  down there, so it just reanimated and died again instantaneously.

curious thing: shield was still regenarating while i watched other players successfully complete the mission.
(the mission was completed and i got the rewards.)
i did a screen but i don't know how much of help it could be:
https://www.dropbox.com/s/v2v8vup07mkuczd/2014-06-11_00001.jpg
 

right after the completition of that mission, this was my game screen: (see image)
the game screen was frozen, so i turned game off. it was normal when  turned back on.
https://www.dropbox.com/s/shc40b6bdp1yy8i/2014-06-09_00003.jpg