Unity stop render to HMD when HMD can not see the sensor

Target Platforms XR
1

After upgrade to 5.5 from 5.4, Unity stop rendering to HMD when HMD can’t see the sensor. This is quite annoying. Is there anyway to bypass this feature and always render to HMD as in 5.4? Many thanks!

2

Bump. Can I use Oculus DK2 without a sensor?