Missing End crystals

Please attach a screenshot of this occurring while the F3 debug screen is enabled.

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I have encountered this same bug in 1.18.2 on my own server in a freshly generated world, though there was no fire on the bedrock blocks on top of each obsidian tower.  There were only 2 End crystals generated, with the rest missing.

I have attached a screenshot.  I have done nothing in this world except open the end portal and jump through.

The server is configured with 4 cores and 13GB of RAM.  Please let me know if you need additional information.

The image attached is from a Paper server, not vanilla. 

The image was not attached by the reporter.