5.5.2 Hotfix Released

Hotfix 5.5.2 is now live! This latest update has over 130 different fixes - make sure to snag it!

Please feel free to share feedback and discuss the current version in the release topic, Unreal Engine 5.5 Released.

If you experience a bug with the 5.5.2 Hotfix, please follow the How to Report a Bug guide to report it on the Bug Submission Form .

Issue Summary
UE-228848 Crash in FPipelineFileCacheManager::RegisterPSOStats
UE-227647 [CrashReport][Assert] UnrealEditor-ControlRig!static bool ??R<lambda_2>@?L@??Execute_Internal@UFKControlRig@@UEAA_NAEBVFName@@@Z@QEBA_NPEAUFRigCurveElement@@@Z(struct FRigCurveElement *) [Engine/Plugins/Animation/ControlRig/Source…
UE-217931 Add Support for Archicad 28
UE-229154 [PCG] ensure firing with pcg.GraphMultithreading == 1
UE-229030 [PCG] Fix performance hitches in GPU data collection packing/unpacking
UE-228893 Modifiers applied multiple times
UE-228796 Incorrect hair shadow
UE-228822 //UE5/Release-5.5 - Build Engine Localization - LogLocTextHelper: Warning: Source/[…]/LevelEditorViewportToolbarSections.cpp(1561): Text conflict from LOCTEXT macro for namespace LevelEditorViewportToolbar
UE-228757 [PCG] GPU SM Spawner attribute validation is broken
UE-221995 Automation test errors in AvalancheProject Editor Win64 Test=UE.EditorAutomation(RunTest=Group_Avalanche)
UE-210616 Update Techsoft API to 2024.6
UE-201823 When adding the UIRenderer to the Movie Render Queue, the rendering output is a difference in PIE and MRQ.
UE-234115 Opening Landscape mode in a blank template project freezes the Editor
UE-231277 RBAN Debug draw is rendering in viewports where it hasnt before.
UE-231272 Enhanced input enabled with Common UI legacy depreciates all previous input data dables
UE-231285 Crash saving a Motion Design Scene with Mask modifier on an Actor without Mask component
UE-231263 [ASIS] Touch events does not works on full screen
UE-231221 Fix hair light leak due to incorrect voxel traversal
UE-231195 MegaLights doesn’t support lighting channels
UE-231385 World Partition - Missing Assets for Level Instances
UE-231369 //UE5/Main - Build DDC Win64 - File listed as RuntimeDependency in DatasmithCADWorker.target does not exist
UE-231281 Copy over fixes for override instance data duplication to 5.5 hotfix
UE-231295 [Interchange] fbx blender armature bone with transform is not import correctly
UE-231279 Camera transitions aren’t correctly taken into account with composite camera rigs
UE-231282 Interchange - Asset import - Morph and bone transform animation not merged
UE-231271 Plugins marked both experimental and beta will now appear as experimental in the plugin browser, even if they were beta in past releases
UE-231256 //UE5/Release-5.5 - UE.EditorAutomation(RunTest=Audio) Linux_ASan vulkan - AddressSanitizer: heap-use-after-free on address
UE-231771 Interchange - FBX import - Rigid body animation reimport broken
UE-231113 LumenShortRangeAOHardwareRayTracing needs raytracing SBT layout because it can be part of the material RTPSO
UE-231105 Motion Design Rundown Editor Crash when adding a page to a page view
UE-231058 Visualization of non-particle data is hidden randomly if the playback has data recorded after the last solver stage
UE-231024 Curve Editor minor grid lines do not render correctly
UE-231643 [Interchange] Time zero bind pose do not support multiple bind pose for the same bone
UE-231754 [Interchange - FBX] In 5.5 only material are imported
UE-231747 [Interchange] The Source Timeline animation range behavior is not doing the right thing
UE-231203 Inconsistent performance in level when playing out
UE-231756 Skeletal Editor - create new skeleton option fails to create new skeletal asset
UE-216512 Orthographic Cameras don’t support Aspect Ratio Axis Constraint
UE-215794 When closing the Mac Editor during a debugging session on XCode the User will hit a Crash
UE-219244 Motion Design - Restore of RC controlled value to default/template does not change the value in preview
UE-222783 Blueprint Templates on Windows always attempt to connect to the default IP when building Remotely for iOS
UE-225254 Grammar doesn’t properly deal with stochastic choices with repeatable tokens
UE-230183 Motion Design - Cloner grid constraint by texture is not considering Texture compare mode
UE-230180 Cloth Asset - Normal import on skeletal mesh and static mesh nodes are partially broken
UE-230029 Boolean modifier failing with spaced Text3D glyphs
UE-229894 LiveLinkHub users cannot enable Marketplace plugins
UE-229765 Animation loop indicator not drawing in the correct location
UE-230591 Batch Retarget dialog doesn’t show Animation Blueprints that use same skeleton as selected Source Skeletal Mesh
UE-230484 [PCG] Fix GPU CopyPoints overwriting attribute values when Attribute Inheritance is set to SourceFirst or TargetFirst
UE-230485 Sequence does not play back in reverse through the Sequencer Playlist
UE-230435 Sim Cache Writes for NDC Write DI do not work for GPU emitters
UE-230398 Nanite Meshes are broken in BigCity level in CitySample
UE-230629 CPU Lightmass no longer works as expected on Mac
UE-230599 OverrideSettings can still try to load objects on other threads
UE-230494 Interchange: Remove redundant keys option skip the first key.
UE-230469 Translucent sort priority is not incrementing value when in outliner mode
UE-230453 [Path tracer] Reference sky atmosphere has a different look than in 5.4
UE-230419 GitHub 12547 : Added support of the analysis-paths flag in integration with PVS-Studio
UE-230292 NDC Islands do not function correctly with reading systems placed in the level.
UE-229753 [Interchange] Bone name space are replace with underscore, legacy fbx rename with dash
UE-229764 MacOS 15 Sequoia and Xcode 16 Warnings building unreallightmass
UE-229541 Get Actor Data from input is not tracking dynamically if the input is an attribute set
UE-229540 Get PCG Component Data is duplicating data if there are multiple components on the actor
UE-229813 [PCG] GPU SM Spawner - After altering the seed and generating small % of instances are missing when using weighted spawning
UE-229796 SDI Video Input Freezes When Video Timecode Format is set to Auto
UE-229628 DMX - Blueprint Load DMX Librairies Synchronous node does not always return an array of DMX librairies available in the project
UE-229568 EOS: Mac does not support project binary mechanism
UE-229508 [PCG] GPU SM Spawner - some small percentage of instances missing when using weighted spawning
UE-229520 Boolean modifier tools intersection causes unwanted faces on target mesh
UE-229482 OCIO - Missing UE Emulation Option for Tone Curve Without Expand Gamut
UE-229191 [NavMesh] Fix Added an oversized dirty area warnings occuring even if using the disabled threshold value when using invokers.
UE-229189 Only register generated navlink proxies if bGenerateNavLinks is enabled.
UE-229488 Floating Properties: Properties are being displayed at the top-left of the viewport instead of being added to the main property stack
UE-229849 MegaLights alpha masking doesn’t work
UE-228246 [Wire
UE-228165 Remote Control DMX: Masked properties could generate an indistinguishable attribute name when created without signatures
UE-228068 PCG Node Errors not clearing when expected.
UE-228063 Generating PCG Graph with invalid generation task id into level fires ensure
UE-229090 MRG -Using Burn in node fails to output Media and returns Ensure error spam
UE-229028 [PCG] Fix attribute function captures breaking for nested functions
UE-228884 Circularly referenced blueprints cause stack overflow in a package game without IOStore
UE-228844 Interchange - Import - Build scale doubled in some generated LODs when Nanite enabled
UE-229476 Certain Array Constants are created with no pins, and attempting to add a pin causes an ensure
UE-229467 Chaos Visual Debugger shows the incorrect landscape tile if the world is loaded and unloaded rapidly
UE-229321 [PCG] Remove linebreak support from Custom HLSL node attribute function regex
UE-229285 Interchange - FBX import - Rigid body animation not imported with example
UE-229284 Add the new iPadMini7 profile
UE-229319 [PCG] GPU Spawner - some primitive component flags in mesh descriptor don’t work like CastShadow
UE-227638 [CrashReport][Assert] UnrealEditor-HairStrandsCore!ComputeBoneTransform(FNDIHairStrandsData const *) [Engine/Plugins/Runtime/HairStrands/Source/HairStrandsCore/Private/Niagara/NiagaraDataInterfaceHairStrands.cpp:939]
UE-227254 Random children selection ignores last state in the AI StateTree
UE-236964 Collision profiles are reset when blueprint is loaded
UE-239029 Foliage on Static Mesh disappears when added to Level Instance.
UE-230270 LiveLink OpenVR - input mapping set is incomplete
UE-229981 Installed Build command with console support fails with error
UE-229986 Deadlock between FMacApplication & FMacWindow when opening LyraGame
UE-229988 Nullptr exception when selecting a new Default Editor map in Project Settings on Mac
UE-230744 Interchange - FBX - Import - Animation - Animated time not working
UE-230445 Blend Stack: Blend profiles don’t work on bone containers that aren’t identical to the ref skeleton
UE-230404 GeneratePsyms fails with installed builds due to missing dymp_syms tool and incorrect path space handling
UE-230145 Preview Platforms are greyed out when using Vulkan on Windows with a AMD GPU
UE-230763 Modular Control Rig Content Fixes
UE-230734 Can’t compile version 5.5 if root is 49 chars - HierarchyTableBuiltinUncookedOnly
UE-230696 GitHub 12566 : Gpu skinning crash when precaching PSOs
UE-231278 Component Velocity is not reset
UE-230969 MRG subsample accumulation incorrectly frees accumulators before all spatial subsamples have finished
UE-231645 Fix deadlock between sk component and sk build or import
UE-231578 Adding a camera rig to a camera asset crashes if the asset doesn’t have a proxy table
UE-230982 Possible memory corruption in evaluation hook system
UE-230022 Effector linked to cloner are unlinked in rundown when playing level due to not being initialized
UE-230983 Outliner view items always get invalidated
UE-230860 [Interchange] Animation names from FBX files are different between legacy imports and interchange
UE-228717 GitHub 12453 : Fix min desired width getter for spinbox
UE-228515 Set Sekeltal Mesh does not update on Blueprint construction
UE-228301 [PCG] Large hitches trigged by component registration/AddGraph flow in property bag layout code
UE-228539 Subdivide segment seed attribute doesn’t work as expected
UE-228394 Importing groom from alembic doesn’t produce cache files
UE-228022 Merging a mix of additive and override layers yields unexpected results
UE-227911 LiveLinkHub assigns timecode source to a client regardless of if it’s enabled as timecode source
UE-227801 Remote Control DMX: In some cases generated fixture types end up having the same attribute twice
UE-227824 DMX: Fixture patches do not always increment their patch number when added from the add fixture patch menu
UE-229145 Mobile Depth of Field blurry eveywhere
UE-229096 MRQ -OCIO configuration is not applied on 8bit Media formats
UE-228761 [PCG] GPU - attributes with name set to None not supported
UE-228989 Rundown Server: Get Page Details is broken in packaged game
UE-228981 Editor crash occurs due to fatal error: …\VulkanRHI\Private\VulkanMemory.cpp] Unable to find alternate type for index 0, MemSize 1048576, MemPropTypeBits 27, MemPropertyFlags 7
UE-228842 Interchange - LOD import - Only LOD0 gets the import build settings
UE-228738 VR Template
UE-229353 [Mac] Android not being seen as Valid Platform and Will not Package
UE-231892 A crash occurs when a State Tree Parameter is set to a variable type also referenced in a STT
UE-232039 Preview Crashes on Metal when using SM6
UE-228677 Groom cache (guide/strands) don’t work correctly with TriangleStrip
UE-227835 DMX: Take recorder gets stuck in an ensureAlways recursion when starting to record fixture patches with identical names
UE-229701 Display window of EXR files not respecting camera overscan when rendering shot in MRQ
UE-229019 Text3D WrapAndScale not working properly with layout alignments
UE-228892 [For 5.5 Hotfix] Depth of field recombination breaks with certain settings
UE-230355 HLSL Point Processing node not generating expected data
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