destroy() not working properly for cargo

There are some issues with destroying newly created cargo objects when using coalition.addStaticObject, as well as destroying existing objects in the game

ie.

local myObj = coalition.addStaticObject(cargo_table)

myObj:destroy()

myObj:isExist() -- true

I think the problem here is that the Scripting Engine doesn't recognize the cargo as destroyed until after your script has run.

IE. In my log I tried 2 test cases:

First Case:

03713.586 INFO    SCRIPTING: Creating StaticObject Instance 'TESTCARGO'
03713.587 ERROR   DCS: The file with cargo parameters doesn't exist. Please, add it in (the folder with DCS)/Data and name it as the cargo 3d-model ammo_cargo
03713.587 INFO    DCS: CargoManager::addCargo16805376
03713.587 INFO    SCRIPTING:   5117(    13)/E:               EVENT00000.onEvent({[1]="S_EVENT_BIRTH",[2]={["id"]=15,["IniObjectCategory"]=6,["time"]=0,["initiator"]={["id_"]=16805376,},},[5]=1,})
03713.587 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="DATABASE#000000003",})
03713.587 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="DATABASE#000000003",[3]=1,})
03713.587 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="SPAWN#000000285",})
03713.587 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="SPAWN#000000285",[3]=5,})
03713.587 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="SPAWN#000000284",})
03713.587 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="SPAWN#000000284",[3]=5,})
03713.587 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (StaticObject.getByName():isExist()) : true
03713.587 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (test_cargo_obj:isExist()) : true
03713.587 INFO    SCRIPTING: Destroying Crate TESTCARGO (using obj:destroy())
03713.587 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (test_cargo_obj:isExist()) : true
03713.588 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (StaticObject.getByName():isExist()) : true
03713.588 INFO    SCRIPTING: Destroying Crate TESTCARGO (StaticObject.getByName():destroy()
03713.588 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (test_cargo_obj:isExist()) : true
03713.588 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (StaticObject.getByName():isExist()) : true
03713.588 INFO    DCS: cargoCrashed:16805376
03713.588 INFO    SCRIPTING:   5117(    13)/E:               EVENT00000.onEvent({[1]="S_EVENT_DEAD",[2]={["id"]=8,["IniObjectCategory"]=6,["time"]=45883.901,["initiator"]={["id_"]=16805376,},},[5]=-1,})
03713.588 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="SPAWN#000000285",})
03713.588 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="SPAWN#000000285",[3]=5,})
03713.588 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="SPAWN#000000284",})
03713.588 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="SPAWN#000000284",[3]=5,})
03713.588 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="DATABASE#000000003",})
03713.588 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="DATABASE#000000003",[3]=1,})

Second Case:

04061.584 INFO    SCRIPTING: Creating StaticObject Instance 'TESTCARGO'
04061.585 INFO    DCS: CargoManager::addCargo16805632
04061.585 INFO    SCRIPTING:   5117(    13)/E:               EVENT00000.onEvent({[1]="S_EVENT_BIRTH",[2]={["id"]=15,["IniObjectCategory"]=6,["time"]=0,["initiator"]={["id_"]=16805632,},},[5]=1,})
04061.585 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="DATABASE#000000003",})
04061.585 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="DATABASE#000000003",[3]=1,})
04061.585 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="SPAWN#000000285",})
04061.585 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="SPAWN#000000285",[3]=5,})
04061.585 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="SPAWN#000000284",})
04061.585 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="SPAWN#000000284",[3]=5,})
04061.586 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (StaticObject.getByName():isExist()) : true
04061.586 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (test_cargo_obj:isExist()) : true
04061.586 INFO    SCRIPTING: Destroying Crate TESTCARGO (using obj:destroy())
04061.586 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (test_cargo_obj:isExist()) : true
04061.586 INFO    SCRIPTING: TESTCARGO - Is ALIVE? (StaticObject.getByName():isExist()) : true
04061.586 INFO    DCS: cargoCrashed:16805632
04061.586 INFO    SCRIPTING:   5117(    13)/E:               EVENT00000.onEvent({[1]="S_EVENT_DEAD",[2]={["id"]=8,["IniObjectCategory"]=6,["time"]=46231.901,["initiator"]={["id_"]=16805632,},},[5]=-1,})
04061.586 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="SPAWN#000000285",})
04061.586 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="SPAWN#000000285",[3]=5,})
04061.586 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="SPAWN#000000284",})
04061.586 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="SPAWN#000000284",[3]=5,})
04061.586 INFO    SCRIPTING:   5127(    13)/E:               EVENT00000.onEvent({[1]="Evaluating: ",[2]="DATABASE#000000003",})
04061.586 INFO    SCRIPTING:   5240(    13)/E:               EVENT00000.onEvent({[1]="Calling EventFunction for Class ",[2]="DATABASE#000000003",[3]=1,})

You can see that the EVENT_DEATH isn't called for the cargo object until long after my script has finished executing, yet when I try to check :isExist it still thinks it's alive (because the mission hasn't destroyed it yet for some reason).

Is this a known bug? It's been around since the last 3 patches (Being an issue since August 2017 for me).

This is the test code I was using to confirm all of this:

env.info("Creating StaticObject Instance 'TESTCARGO'")
local function PositionAt12Oclock(_unit, _offset)
   local _position = _unit:getPosition()
   local _angle = math.atan2(_position.x.z, _position.x.x)
   local _xOffset = math.cos(_angle) * _offset
   local _yOffset = math.sin(_angle) * _offset

   local _point = _unit:getPoint()
   return { x = _point.x + _xOffset, z = _point.z + _yOffset, y = _point.y }
end

local pos = PositionAt12Oclock(Unit.getByName("SLCPilot1"), 30)
local test_cargo_obj = coalition.addStaticObject(country.id.RUSSIA, {
	country = "Russia",
	category = "Cargos",
	x = pos.x,
	y = pos.z,
	type = "ammo_cargo",
	name = "TESTCARGO",
	mass = 1000,
	canCargo = true
})
env.info("TESTCARGO - Is ALIVE? (StaticObject.getByName():isExist()) : " .. tostring(StaticObject.getByName("TESTCARGO"):isExist()))
env.info("TESTCARGO - Is ALIVE? (test_cargo_obj:isExist()) : " .. tostring(test_cargo_obj:isExist()))
env.info("Destroying Crate TESTCARGO (using obj:destroy())")
test_cargo_obj:destroy()
env.info("TESTCARGO - Is ALIVE? (test_cargo_obj:isExist()) : " .. tostring(test_cargo_obj:isExist()))
env.info("TESTCARGO - Is ALIVE? (StaticObject.getByName():isExist()) : " .. tostring(StaticObject.getByName("TESTCARGO"):isExist()))
--env.info("Destroying Crate TESTCARGO (StaticObject.getByName():destroy()")
--StaticObject.getByName("TESTCARGO"):destroy()
--env.info("TESTCARGO - Is ALIVE? (test_cargo_obj:isExist()) : " .. tostring(test_cargo_obj:isExist()))
--env.info("TESTCARGO - Is ALIVE? (StaticObject.getByName():isExist()) : " .. tostring(StaticObject.getByName("TESTCARGO"):isExist()))

Thats a known bug.