Unreal Engine Issues
Unreal Engine Issues
Backout attempted fix for - AutoSize triggers ensure on shortened Skel Anim Section moved past anim length
zComponent - Archive - May 29, 2026In Sequencer, calling "Edit > Auto Size" on a UMovieSceneSkeletalAnimationSection triggers the LowerBound > UpperBound ensure in UMovieSceneSection::SetRange (MovieSceneSection.h:333) when the secti ...
Fix PrimitiveComponent overlap indirection
UE - Simulation - Physics - Sep 27, 2016When doing overlap tests in PrimitiveComponent, UWorld->ComponentOverlapMulti is used. The callstack for that ends up looking like this (callstack is inverted, highest level on top): UWorld::Compo ...
Fixed frame interval playback should be off by default
UE - Anim - Sequencer - Aug 5, 20164.14 fails to launch on macOS High Sierra
UE - Platform - Apple - Jan 15, 2018The engine will crash in `FMacPlatformSplash::Show()` when trying to launch on macOS High Sierra. ...
GameplayTagEventMap is cleared on clients when "AbilitySystem.Fix.ReplicateTagCountContainerWithIris" is enabled
UE - Gameplay - Gameplay Ability System - May 28, 2026Fix AGameModeBase::GetGameSessionClass
UE - Gameplay - Dec 5, 2016AGameModeBase::GetGameSessionClass wasn't properly returning the set GameSessionClass. ...
Crash when launching 4.14.2 in cmd window with -dx12 argument
UE - Graphics Features - Jan 3, 2017Launching the editor with DX12 from a command window is crashing the engine. Note Crash occurs on Nvidia version 376.19 and does not occur on 376.33 This is a Regression ...
Fixing a Blueprint's compilation error after editor reload causes instances to lose transform
UE - Framework - Blueprint - Feb 23, 2023Saving and reloading a Blueprint instance with a compilation error, a.k.a., "Bad Blueprint" will lead to a transform reset when the Blueprint is successfully recompiled. ...
[CrashReport] UE4Editor_UnrealEd!FEdGraphUtilities::PostProcessPastedNodes() [edgraphutilities.cpp:138]
UE - Gameplay - Blueprint - Jan 24, 2017This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...
Redundant Material Slots Added To Mesh With LODs After Upgrading To 4.14 And Higher
Tools - Mar 9, 2017When upgrading a project that was prior to the material slot implementation to a newer engine version will cause redundant material slots to be created. This requires the mesh to have LODs and multi ...