Hello,
I cannot unfortunately reproduce the problem. Could you please create a short video displaying the problem? It would help us a lot, thank you.

Shouldn't be a problem, plenty of people were recording the event. I will add it as soon as it is uploaded.
Further testing shows it can be reproduced on dedicated server with no problem.
Will ask one of our mission builders to make a version of our Zeus mission, with which I can easily reproduce it, without mods so we can rule that out.

As for RPT, it's clean besides the following (in it's entirety, this doesn't go on a hundred times or so :D), but we get a few of those all the time:

21:52:46 Error in expression <uments call _code;
} else {

_arguments call (call compile _code);
};
} forEach >
21:52:46 Error position: <call (call compile _code);
};
} forEach >
21:52:46 Error call: Type Script, expected code
21:52:46 File A3\Functions_F_EPA\Misc\fn_executeStackedEventHandler.sqf, line 41
21:52:46 Error in expression <uments call _code;
} else {

_arguments call (call compile _code);
};
} forEach >
21:52:46 Error position: <call (call compile _code);
};
} forEach >
21:52:46 Error Generic error in expression
21:52:46 File A3\Functions_F_EPA\Misc\fn_executeStackedEventHandler.sqf, line 41
21:52:46 Error in expression <uments call _code;
} else {

_arguments call (call compile _code);
};
} forEach >
21:52:46 Error position: <call (call compile _code);
};
} forEach >
21:52:46 Error call: Type Script, expected code
21:52:46 File A3\Functions_F_EPA\Misc\fn_executeStackedEventHandler.sqf, line 41
21:52:46 Error in expression <uments call _code;
} else {

_arguments call (call compile _code);
};
} forEach >
21:52:46 Error position: <call (call compile _code);
};
} forEach >
21:52:46 Error Generic error in expression
21:52:46 File A3\Functions_F_EPA\Misc\fn_executeStackedEventHandler.sqf, line 41

Uhm... where should I upload it? 180 MB.

would this do? http://feedback.arma3.com/view.php?id=13750

Interesting, it is the same issue. Might be caused by a mod in this case, who knows, but the behavior is essentially the same.

Feel free to close this one as duplicate.

Video is available here: https://mega.co.nz/#!FxRFAIDC!LC9lERd43vyO-XIlw5Kib6gwJPSNN8jo9v8v2hTgi6w

Sorry for the weirdo filehoster, not my choice...