This was found driving XRG on an open layout of Fern Bay. When someone takes over the car and you spectate them in driver view, the notice that comes up when you leave the pit garage (direction of travel and 80 km/h) appears on the screen at instances around the track. It doesn't appear for the driver.

Same for me

appearently there is also a similiar bug:
if the old driver is honking on driver-change (for example because he has leftclick=horn and clicks the button) then from view of others (specs? drivers? not sure) the car never stops honking.
But for the new driver it does not honk. When the new driver uses the honk once, then it stops and is normal again.