Crash when loading world: java.util.ConcurrentModificationException when using Java 11 or above

java.util.ConcurrentModificationException
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134)
	at cje.b(SourceFile:67)
	at cje.a(SourceFile:57)
	at cff.a(SourceFile:98)
	at cfi.a(SourceFile:86)
	at java.base/java.util.stream.ReferencePipeline$4$1.accept(ReferencePipeline.java:212)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1654)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.IntPipeline.reduce(IntPipeline.java:496)
	at java.base/java.util.stream.IntPipeline.max(IntPipeline.java:459)
	at cfi.a(SourceFile:86)
	at cfd$c.a(SourceFile:175)
	at java.base/java.util.stream.ReferencePipeline$4$1.accept(ReferencePipeline.java:212)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1654)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.IntPipeline.reduce(IntPipeline.java:496)
	at java.base/java.util.stream.IntPipeline.max(IntPipeline.java:459)
	at cfd$c.a(SourceFile:176)
	at cfd$c.<init>(SourceFile:98)
	at cfd.a(SourceFile:280)
	at cet.a(SourceFile:25)
	at ces$a.a(SourceFile:89)
	at bwy.a(SourceFile:187)
	at bxc.d(SourceFile:44)
	at bxc.a(SourceFile:199)
	at us.a(SourceFile:461)
	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
	at us.a(SourceFile:455)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478)
	at uu.b(SourceFile:57)
	at agk.e(SourceFile:83)
	at agk.a(SourceFile:123)
	at agk.run(SourceFile:91)
	at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177)