[MC-154602] End cities being generated causes the game to crash (caused by Elytra item frame)

https://gfycat.com/comfortablerealisticjackrabbit

Edit: The bug occurs when entering the chunk shown in the video from the south. The render distance is 16 chunks.
The seed is 5144055388196999709
The chunk that you enter when the crash occurs is 84 24.
Crash log is linked
The video shows the bug happening twice, the f3 screen is shown in the second attempt

1.14.3 Pre-Release 3: crash-2019-06-15_12.15.41-server.txt

Description: Exception generating new chunk

java.lang.NullPointerException: Exception generating new chunk
	at ati.f(SourceFile:86)
	at ath.c(SourceFile:232)
	at ail.<init>(SourceFile:234)
	at ath.<init>(SourceFile:35)
	at ath.<init>(SourceFile:39)
	at ati.<init>(SourceFile:50)
	at cia$a.a(SourceFile:97)
	at cit.a(SourceFile:73)
	at cir.a(SourceFile:66)
	at cep.a(SourceFile:69)
	at cag.a(SourceFile:36)
	at cgz.a(SourceFile:85)
	at cgz$$Lambda$3130/1156570187.accept(Unknown Source)
	at java.util.stream.Streams$StreamBuilderImpl.forEachRemaining(Streams.java:419)
	at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
	at cgz.a(SourceFile:84)
	at cgb.a(SourceFile:35)
	at cao.a(SourceFile:20)
	at cao.a(SourceFile:13)
	at cag.a(SourceFile:36)
	at bij.a(SourceFile:385)
	at bxd.a(SourceFile:126)
	at bxh.c(SourceFile:83)
	at bxh$$Lambda$1096/1628035200.doWork(Unknown Source)
	at bxh.a(SourceFile:217)
	at uu.a(SourceFile:540)
	at uu$$Lambda$2624/583479764.apply(Unknown Source)
	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
	at uu.a(SourceFile:534)
	at uu$$Lambda$2621/45136637.apply(Unknown Source)
	at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:952)
	at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926)
	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
	at uw.b(SourceFile:57)
	at uw$$Lambda$2599/286205772.run(Unknown Source)
	at agq.e(SourceFile:83)
	at agq.a(SourceFile:123)
	at agq.run(SourceFile:91)
	at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1689)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)