[SA] Emergency horns can't be activated (SAMP)

So, emergency siren on police cars, firetrucks and ambulance doesn't work when playing in SA-MP. This bug happens every time there is another player (or players) in stream zone driving emergency car. As a result, pressing horn button on my side activates horns for that player's car. The horn button works correctly for my emergency car when that another player is streamed out.
