[Michal Kozusznik]

I know it might not help you much but I can confirm that it works as described. So double check your end.
While you put no details, I can only make you aware to not run SteamVR prior to hit Join button.
After finishing a race, you have to close RRE and SteamVR. you can close SteamVR first which closes RRE too. Point is, Steam reports RRE is running until you close SteamVR