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Crash when enabling Nanite (Linux)

Hi,

I’m trying to use UE5 on Linux (Ubuntu 21.04) with very little success. Whenever I select enable Nanite the editor crashes as soon as it starts to build the mesh:

Assertion failed: ChildIndex < ( 1 << 6 ) [File:Runtime/Engine/Public/Rendering/NaniteResources.h] [Line: 260]

libUnrealEditor-NaniteBuilder.so!Nanite::FHierarchyFixup::FHierarchyFixup(unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int) [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Engine/Public/Rendering/NaniteResources.h:260]
libUnrealEditor-NaniteBuilder.so!Nanite::WritePages(Nanite::FResources&, TArray<Nanite::FPage, TSizedDefaultAllocator<32> >&, TArray<Nanite::FClusterGroup, TSizedDefaultAllocator<32> > const&, TArray<Nanite::FClusterGroupPart, TSizedDefaultAllocator<32> > const&, TArray<Nanite::FCluster, TSizedDefaultAllocator<32> > const&, TArray<Nanite::FEncodingInfo, TSizedDefaultAllocator<32> > const&, unsigned int)::$_15::operator()(int) const [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Developer/NaniteBuilder/Private/NaniteEncode.cpp:1801]
libUnrealEditor-Core.so!ParallelForImpl::TParallelForData<TFunctionRef<void (int)> >::Process(int, TSharedRef<ParallelForImpl::TParallelForData<TFunctionRef<void (int)> >, (ESPMode)1>&, ENamedThreads::Type, bool) [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Public/Async/ParallelFor.h:196]
libUnrealEditor-Core.so!ParallelForImpl::TParallelForTask<TFunctionRef<void (int)> >::DoTask(ENamedThreads::Type, TRefCountPtr<FGraphEvent> const&) [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Public/Async/ParallelFor.h:136]
libUnrealEditor-Core.so!TGraphTask<ParallelForImpl::TParallelForTask<TFunctionRef<void (int)> > >::ExecuteTask(TArray<FBaseGraphTask*, TSizedDefaultAllocator<32> >&, ENamedThreads::Type, bool) [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Public/Async/TaskGraphInterfaces.h:960]
libUnrealEditor-Core.so!FTaskGraphCompatibilityImplementation::QueueTask(FBaseGraphTask*, bool, ENamedThreads::Type, ENamedThreads::Type)::'lambda'()::operator()() const [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Private/Async/TaskGraph.cpp:1906]
libUnrealEditor-Core.so!LowLevelTasks::TTaskDelegate<48u, bool>::TTaskDelegateImpl<void LowLevelTasks::FTask::Init<FTaskGraphCompatibilityImplementation::QueueTask(FBaseGraphTask*, bool, ENamedThreads::Type, ENamedThreads::Type)::'lambda'()>(char16_t const*, LowLevelTasks::ETaskPriority, FTaskGraphCompatibilityImplementation::QueueTask(FBaseGraphTask*, bool, ENamedThreads::Type, ENamedThreads::Type)::'lambda'()&&, bool)::'lambda0'(), false>::CallAndMove(LowLevelTasks::TTaskDelegate<48u, bool>&, void*, unsigned int) [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Public/Async/Fundamental/TaskDelegate.h:156]
libUnrealEditor-Core.so!bool LowLevelTasks::FScheduler::TryExecuteTaskFrom<&(LowLevelTasks::TLocalQueueRegistry<1024u>::TLocalQueue::DequeueGlobal(bool)), false>(LowLevelTasks::TLocalQueueRegistry<1024u>::TLocalQueue*, LowLevelTasks::TLocalQueueRegistry<1024u>::FOutOfWork&, bool) [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Private/Async/Fundamental/Scheduler.cpp:219]
libUnrealEditor-Core.so!LowLevelTasks::FScheduler::WorkerMain(LowLevelTasks::FScheduler::FSleepEvent*, LowLevelTasks::TLocalQueueRegistry<1024u>::TLocalQueue*, unsigned int, bool) [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Private/Async/Fundamental/Scheduler.cpp:254]
libUnrealEditor-Core.so!UE4Function_Private::TFunctionRefCaller<LowLevelTasks::FScheduler::CreateWorker(LowLevelTasks::TLocalQueueRegistry<1024u>::TLocalQueue*, EThreadPriority, bool, bool)::$_0, void ()>::Call(void*) [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Public/Templates/Function.h:548]
libUnrealEditor-Core.so!FThreadImpl::Run() [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Private/HAL/Thread.cpp:63]
libUnrealEditor-Core.so!FRunnableThreadPThread::Run() [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.cpp:25]
libUnrealEditor-Core.so!FRunnableThreadPThread::_ThreadProc(void*) [/home/adam/UE/UnrealEngine_5_0/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.h:185]
libpthread.so.0!UnknownFunction(0x944f)
libc.so.6!clone(+0x42)

Any way to fix this?