Assertion failed:Default__REINST is class of ...

Development Programming & Scripting
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The context:

<?xml version="1.0" encoding="UTF-8"?>
<FGenericCrashContext>
	<RuntimeProperties>
		<CrashVersion>3</CrashVersion>
		<ExecutionGuid></ExecutionGuid>
		<CrashGUID>UECC-Windows</CrashGUID>
		<IsEnsure>false</IsEnsure>
		<IsStall>false</IsStall>
		<IsAssert>true</IsAssert>
		<CrashType>Assert</CrashType>
		<ErrorMessage>Assertion failed: ((UObject*)ContainerPtr)-&gt;IsA(GetOwner&lt;UClass&gt;()) [File:F:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Public\UObject\UnrealType.h] [Line: 714] 
&apos;Default__REINST_SKEL_BP_Grandchild_C_5835&apos; is of class &apos;REINST_SKEL_BP_Grandchild_C_5835&apos; however property &apos;Sphere&apos; belongs to class &apos;SKEL_BP_Parent_C&apos;
</ErrorMessage>
		<CrashReporterMessage />
		<CrashReporterMessage>Attended</CrashReporterMessage>
		<ProcessId></ProcessId>
		<SecondsSinceStart>13072</SecondsSinceStart>
		<IsInternalBuild>false</IsInternalBuild>
		<IsPerforceBuild>false</IsPerforceBuild>
		<IsWithDebugInfo>true</IsWithDebugInfo>
		<IsSourceDistribution>false</IsSourceDistribution>
		<GameName>UE-Test</GameName>
		<ExecutableName>UnrealEditor</ExecutableName>
		<BuildConfiguration>Development</BuildConfiguration>
		<GameSessionID />
		<PlatformName>WindowsEditor</PlatformName>
		<PlatformFullName>Win64 [Windows 10]  64b]</PlatformFullName>
		<PlatformNameIni>Windows</PlatformNameIni>
		<EngineMode>Editor</EngineMode>
		<EngineModeEx>Dirty</EngineModeEx>
		<DeploymentName />
		<EngineVersion>5.5.4-40574608+++UE5+Release-5.5</EngineVersion>
		<EngineCompatibleVersion>5.5.4-40574608+++UE5+Release-5.5</EngineCompatibleVersion>
		<CommandLine>F:\Workspace\Test\Test.uproject</CommandLine>
		<LanguageLCID>9</LanguageLCID>
		<AppDefaultLocale>zh-CN</AppDefaultLocale>
		<BuildVersion>++UE5+Release-5.5-CL-40574608</BuildVersion>
		<Symbols>**UE5*Release-5.5-CL-40574608-Win64-Development</Symbols>
		<IsUERelease>true</IsUERelease>
		<IsRequestingExit>false</IsRequestingExit>
		<UserName />
		<BaseDir>F:/Program/Epic Games/UE_5.5/Engine/Binaries/Win64/</BaseDir>
		<RootDir>F:/Program/Epic Games/UE_5.5/</RootDir>
		<MachineId></MachineId>
		<LoginId></LoginId>
		<EpicAccountId />
		<SourceContext />
		<UserDescription />
		<UserActivityHint>Layout=&quot;UserDefinedStruct_MemberVariablesEditor&quot; Label=&quot;Structu</UserActivityHint>
		<CrashDumpMode>0</CrashDumpMode>
		<GameStateName />
		<Misc.NumberOfCores>6</Misc.NumberOfCores>
		<Misc.NumberOfCoresIncludingHyperthreads>12</Misc.NumberOfCoresIncludingHyperthreads>
		<Misc.Is64bitOperatingSystem>1</Misc.Is64bitOperatingSystem>
		<Misc.CPUVendor>GenuineIntel</Misc.CPUVendor>
		<CallStack>UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_StructUtilsEditor
UnrealEditor_StructUtilsEditor
UnrealEditor_UnrealEd
UnrealEditor_KismetCompiler
UnrealEditor_KismetCompiler
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_Kismet
UnrealEditor_Kismet
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
user32
user32
UnrealEditor_ApplicationCore
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll</CallStack>
		<PCallStack>

UnrealEditor-CoreUObject 0x00007fff62df0000 + 444af0 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 479b55 
UnrealEditor-Engine 0x00007fff52f40000 + 5d4cff 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 65674c 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 61cbd8 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 243709 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 260273 
UnrealEditor-StructUtilsEditor 0x000001c9b3a10000 + 37c85 
UnrealEditor-StructUtilsEditor 0x000001c9b3a10000 + 32d36 
UnrealEditor-UnrealEd 0x00007fff50580000 + e5c5bd 
UnrealEditor-KismetCompiler 0x00007fff43170000 + 82837 
UnrealEditor-KismetCompiler 0x00007fff43170000 + 291d 
UnrealEditor-UnrealEd 0x00007fff50580000 + e610a9 
UnrealEditor-UnrealEd 0x00007fff50580000 + e561a7 
UnrealEditor-Kismet 0x00007fff4e670000 + 889c58 
UnrealEditor-Kismet 0x00007fff4e670000 + 8583da 
UnrealEditor-Slate 0x00007fff62780000 + 28145c 
UnrealEditor-Slate 0x00007fff62780000 + 29f332 
UnrealEditor-Slate 0x00007fff62780000 + 2a7eb 
UnrealEditor-Slate 0x00007fff62780000 + 154a4 
UnrealEditor-Slate 0x00007fff62780000 + 6f23f 
UnrealEditor-Slate 0x00007fff62780000 + 5d5c6 
UnrealEditor-Slate 0x00007fff62780000 + 51f9c 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 3aaf0 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 25786 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 3d85e 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 205b7 
USER32 0x00007fffd7750000 + ef5c 
USER32 0x00007fffd7750000 + e684 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 5bb26 
UnrealEditor 0x00007ff7e8310000 + 632d 
UnrealEditor 0x00007ff7e8310000 + 257ac 
UnrealEditor 0x00007ff7e8310000 + 2589a 
UnrealEditor 0x00007ff7e8310000 + 29114 
UnrealEditor 0x00007ff7e8310000 + 3bd04 
UnrealEditor 0x00007ff7e8310000 + 3f0ba 
KERNEL32 0x00007fffd7680000 + 17374 
ntdll 0x00007fffd84d0000 + 4cc91 
</PCallStack>
		<PCallStackHash></PCallStackHash>
		<Threads>
			<Thread>
				<CallStack>KERNELBASE 0x00007fffd60c0000 + 3b699 
UnrealEditor-Core 0x00007fff638f0000 + 6b1592 
UnrealEditor-Core 0x00007fff638f0000 + 6b4cc0 
UnrealEditor-Core 0x00007fff638f0000 + 4fa99f 
UnrealEditor-Core 0x00007fff638f0000 + 418f37 
UnrealEditor-Core 0x00007fff638f0000 + 41c7ac 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 444af0 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 479b55 
UnrealEditor-Engine 0x00007fff52f40000 + 5d4cff 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 65674c 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 61cbd8 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 243709 
UnrealEditor-CoreUObject 0x00007fff62df0000 + 260273 
UnrealEditor-StructUtilsEditor 0x000001c9b3a10000 + 37c85 
UnrealEditor-StructUtilsEditor 0x000001c9b3a10000 + 32d36 
UnrealEditor-UnrealEd 0x00007fff50580000 + e5c5bd 
UnrealEditor-KismetCompiler 0x00007fff43170000 + 82837 
UnrealEditor-KismetCompiler 0x00007fff43170000 + 291d 
UnrealEditor-UnrealEd 0x00007fff50580000 + e610a9 
UnrealEditor-UnrealEd 0x00007fff50580000 + e561a7 
UnrealEditor-Kismet 0x00007fff4e670000 + 889c58 
UnrealEditor-Kismet 0x00007fff4e670000 + 8583da 
UnrealEditor-Slate 0x00007fff62780000 + 28145c 
UnrealEditor-Slate 0x00007fff62780000 + 29f332 
UnrealEditor-Slate 0x00007fff62780000 + 2a7eb 
UnrealEditor-Slate 0x00007fff62780000 + 154a4 
UnrealEditor-Slate 0x00007fff62780000 + 6f23f 
UnrealEditor-Slate 0x00007fff62780000 + 5d5c6 
UnrealEditor-Slate 0x00007fff62780000 + 51f9c 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 3aaf0 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 25786 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 3d85e 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 205b7 
USER32 0x00007fffd7750000 + ef5c 
USER32 0x00007fffd7750000 + e684 
UnrealEditor-ApplicationCore 0x00007fffa6e80000 + 5bb26 
UnrealEditor 0x00007ff7e8310000 + 632d 
UnrealEditor 0x00007ff7e8310000 + 257ac 
UnrealEditor 0x00007ff7e8310000 + 2589a 
UnrealEditor 0x00007ff7e8310000 + 29114 
UnrealEditor 0x00007ff7e8310000 + 3bd04 
UnrealEditor 0x00007ff7e8310000 + 3f0ba 
KERNEL32 0x00007fffd7680000 + 17374 
ntdll 0x00007fffd84d0000 + 4cc91 
</CallStack>
				<IsCrashed>true</IsCrashed>
				<Registers />
				<ThreadID></ThreadID>
				<ThreadName>GameThread</ThreadName>
			</Thread>
			<Thread>
				<CallStack>ntdll 0x00007fffd84d0000 + 9d814 
KERNELBASE 0x00007fffd60c0000 + 76eb3 
KERNEL32 0x00007fffd7680000 + 1d3bc 
UnrealEditor-Core 0x00007fff638f0000 + 6b1e83 
UnrealEditor-Core 0x00007fff638f0000 + 6a42a4 
UnrealEditor-Core 0x00007fff638f0000 + 6b3fd9 
KERNEL32 0x00007fffd7680000 + 17374 
ntdll 0x00007fffd84d0000 + 4cc91 
</CallStack>

I upgrade my project from UE5.4 to UE5.5 then it crashed. It’s fine in UE5.4.
The Grandchild_C can be anyone which has a reference of the structure. It changes sometimes.