gui Map icons rendering. Icons disappear

[Safkon 2]

Hello!

I have problems with drawing icons (default solder icons for all units) in onDraw event handler.
Some of the icons are rendered, some are not. Some rendered icons can disappear after moving or zooming map.

My dialog:

Spoiler

#include "\a3\ui_f\hpp\definecommongrids.inc"
#include "DefaultStaff.hpp"

class RespawnDialog
{
	idd = -1;
	access = 0;
	movingEnable = true;
	enableSimulation = true;
	Controls[] = 
	{
		Background,
		MapFrame,
	};
	
	class MapFrame : RscMapControl
	{
		idc = 1804
		x = 16 * GUI_GRID_W + GUI_GRID_X;
		y = 2 * GUI_GRID_H + GUI_GRID_Y;
		w = 23 * GUI_GRID_W;
		h = 16 * GUI_GRID_H;
		sizeEx = 1 * GUI_GRID_H;
		onDraw = "_this execVM 'scripts\dialog\respawn\onDrawMap.sqf'";
	};

	class Background: IGUIBack
	{
		idc = 2200;
		x = 0 * GUI_GRID_W + GUI_GRID_X;
		y = 0 * GUI_GRID_H + GUI_GRID_Y;
		w = 40 * GUI_GRID_W;
		h = 25 * GUI_GRID_H;
		colorBackground[] = {0,0,0,0.8};
	};
};

 

Map onDrawMap script:
 

Spoiler

 

params ["_control"];

{
	_pos = getPosVisual _x;
	_dir = getDir _x;
	_control drawIcon [
		"iconman", //"respawn_background", // texture
		[1,0,0,1], // text and icon color in format [r,g,b,a] 
		_pos, // position
		24, // width
		24, // height
		_dir // angle
	];
} forEach allUnits;

systemChat "END";

_control

Seems like I'm make some stupid mistake, but I can't figure out what exactly. 🤔

In-game dialog after creation:

Spoiler

After map moving upper:

Spoiler

Top-left squad with broken rendering

P.S.
Scripts and dialog code is shortened for ease of understanding

[Safkon 2]

Ah... problem in execVM.
Seems like onDraw = "_this execVM 'scripts\dialog\respawn\onDrawMap.sqf'"; takes a lot of time for execution and this is not acceptable for UI rendering

onDraw = "_this call compile preprocessFileLineNumbers 'scripts\dialog\respawn\onDrawMap.sqf'"; - works as expected without artifacts