In the latest beta/preview, if you have texture streaming options enabled, the End Crystal beam does not renders, this can be easily observed when respawning the Ender Dragon.
Steps to reproduce:
Go to Settings > Video, then enabled “Texture Streaming” and restart the game
Join any world, then go to The End, and then kill the Ender Dragon
Give yourself a End Crystal, and then summon the Ender Dragon again by placing 4 End Crystal at the End fountain
Observe
Expected results:
End Crystal beam are rendered.
Observed results:
End Crystal beam does not render at all.
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