EnableStereo(true) returns the value on SteamVR if stereo is already enabled

If EnableStereo(true); is called on SteamVR when stereo is already enabled, it will return false:

bool FSteamVRHMD::EnableStereo(bool bStereo)
{
	if( bStereoEnabled == bStereo )
{
	return false;
}

But the comment on IStereoRendering::EnableStereo says:

/**
 * Switches stereo rendering on / off. Returns current state of stereo.
 * @return Returns current state of stereo (true / false).
 */
virtual bool EnableStereo(bool stereo = true) = 0;

The current state of stereo after calling EnableStereo when stereo is already enabled is “true”, so it should return true.