I stripped down the complete mission, but sorry i cant reproduce the Bug.. its a 50/50 chance they stuck or not..
i uploaded the file:
http://feedback.arma3.com/file_download.php?file_id=11056&type=bug
How To:
1: Get any gear on Virtual Arsenal
2: Walk out the Military Office
Try different timings for this...
1: Run out the door after you have your gear
2: Get your Gear, wait 3 - 5 Sec and move out then.
3: Get your Gear and run to the Chopper.
its complete different each time.