it is still there...but it always worked like this(OFP, ARMA, ARMA2 and ARMA3):

place a player first...then you can put empty in the editor.

same with aiming deadzone...wokrs once and after a game restart it resets

thx DarkDruid for the update. I hope you will fine tune the exlosions later, that not every car explodes everytime.

I have shot an MG during my military time...it was like firing a laser gun when proned...not much recoil that lifts the barrel.
you can just aim that thing while shooting by looking at the tracer stream...and not caring much about recoil!

yeah...partially. The blue frame is not reportet in 678.

sorry the first image is wrong...the other 2 show the effect

reported it here: http://feedback.arma3.com/view.php?id=4726
its the same in calm sea!

i have driven a Car in the Mediterranean during summer with a defekt AirCon (always full on). i need to wear a jacket inside the car, because it was way to cold! outside it was like 28-30°C

oh how friendly of you!
you realize i categorized it as minor? we are supposed to report things that are not realisitc/correct!

added image

Can be closed, fixed in Dev Version

It also seems that the Boats are to front heavy. normally a small boat with an engine at its back would not dip his nose that much down into the water after going over a wave

i think he means the visuals!
It would be okay if the heli stops working...but underwater it suddenly looks like a burned out wreck.

stoped the time...after one minute vision got really blurry and dark...at 2 minutes...you are dead.
think that is okay if you are a little trained/fear of drowning.

fixed in the Dev Version