[MP2]

You have to set the player's interior and then change it back:

pawn Код:

stock FixInvisibleObjects(playerid, interval=500)
{
    new int = GetPlayerInterior(playerid);
    SetPlayerInterior(playerid, int+1);
    LinkVehicleToInterior(GetPlayerVehicleID(playerid), int+1);
    SetTimerEx("TIMER_FixInvisibleObjects", interval, 0, "ii", playerid, int);
    return 1;
}

forward TIMER_FixInvisibleObjects(playerid, int);
public TIMER_FixInvisibleObjects(playerid, int)
{
    SetPlayerInterior(playerid, int);
    if(GetPlayerState(playerid) == 2) LinkVehicleToInterior(GetPlayerVehicleID(playerid), int);
    return 1;
}

NOTE: Not tested.