Reproducible in editor, vanilla Altis mission and also MP hosted PBO.
The repro code below draws a quad bike icon, a diagonal line in front of the player and also KK's frame number hint.
The icon and the line is drawn for a few seconds and then disappears. At the point where the icon and line disappears, the frame number hint freezes.
[] spawn {
onEachFrame {
_i = getText (configFile >> "CfgVehicles" >> "B_Quadbike_01_F" >> "icon");
_ep0 = position player;
_d = direction player;
_ep1 = [
(_ep0 select 0) + 10 * sin _d,
(_ep0 select 1) + 10 * cos _d,
(_ep0 select 2) + 1
];
drawIcon3D [
_i,
[1,0,0,1],
_ep1,
1,
1,
0,
"should see a quadbike icon here",
0,
0.04,
"PuristaMedium"
];
_d = (direction player) - 30;
_ep2 = [
(_ep0 select 0) + 5 * sin _d,
(_ep0 select 1) + 5 * cos _d,
(_ep0 select 2)
];
_d = (direction player) + 30;
_ep3 = [
(_ep0 select 0) + 5 * sin _d,
(_ep0 select 1) + 5 * cos _d,
(_ep0 select 2) + 1
];
drawLine3D [_ep2,_ep3,[1,0,0,1]];
hintsilent str diag_frameno;
};
};