Obsidian End platform sometimes renders invisible / half invisible when generating just outside the main end island

Entering the End dimension in the latest beta will make the obsidian platform invisible. This shouldn't happen.

Step to Reproduce
1. Find a stronghold, or just build your own end portal in creative.
2. Enter the portal

Expected Result
The end obsidian platform renders properly outside the main end island.

Observed Result
The end obsidian platform sometimes doesn't render at all, just completely invisible, or even half rendered outside the main end island. This causes confusion which can lead to death if you're not careful.