End portals and end gateways are not rendered properly with the Blindness or Darkness effects

The bug

You can clearly see end portals and end gateways when you have the Blindness/Darkness effect, whatever the distance is.

How to reproduce:

1. Go to an end portal or an end gateway (you can also use /setblock or /fill).

2. Give you Blindness/Darkness.

3. View the portal/gateway from different distances and angles: you'll always see it crystal clear as if you don't have the Blindness/Darkness effect.