Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UnrealEditor-AnimGraph!UAnimGraphNode_Base::GetAnimBlueprint() [AnimGraphNode_Base.h:306]
zComponent - Archive - May 16, 2022Generated from CrashReporter ...
Ensure and Assertion thrown while attempting to change Float value on a Sky Light using the Set Editor Property node
UE - Editor - Verse Class Editor - Apr 25, 2022This is a regression. Assertion thrown while attempting to change a Float value on a Sky Light component using the Set Editor Property node. Different property values can trigger this assertion bes ...
Missing logging or error when applying an anim instance to a skeleton that the anim instance doesn't match.
UE - Runtime - Animation - Feb 9, 2026Currently, we detect whether an anim instance is supported by the skeletal mesh and, if it isn't, unreference the instance, but we don't error or warn the user that this happened. This leads to conf ...
Slate Post Buffer does not work correctly when changing Default Back Buffer Pixel Format
UE - AI Workflows - UI Systems - Slate - May 20, 2024tvOS/IOS: Fails to Build with dSYM Options Enabled Due to DsymExporter Erroring Out
UE - Platform - Mobile - Jan 22, 2019When attempting to package for tvOS or iOS with the generate dSYM options enabled, numerous instances of the following errors occur:[2019.01.21-20.53.35:739][138]UATHelper: Packaging (tvOS): [2019 ...
Subobject ComponentClass overrides cause failing assertions due to UObject reconstruction on AsyncLoadingThread
UE - Engine Scaling - dSTM - Dec 19, 2025Context The blueprint editor allows you to override an actor component's class in derived blueprints (component details panel -> Component Class). [Image Removed] Problem When a blueprint and it ...
Blueprint diffing tool attempts to diff transient properties
UE - Gameplay - Blueprint Editor - Oct 28, 2019The Blueprint diffing tool should skip transient properties. ...
Pointer being freed was not allocated on IOS with MallocBinned2
UE - Platform - Mobile - Systems - Apr 15, 2024Slack thread [Link Removed] Probably related to the same issue seen on Android, explained here: [Link Removed] ...
COTF has issues with out-of-source projects
It is expected that cooking, including COTF, will fix-up all string asset references. There were a few reasons this wasn't happening, but we should get these fixes into 4.15 as the impact was worst ...
Trigger Montage Ended Event results in Unhanded Exception
OLD - Anim - May 6, 2019TriggerMontageEndedEvent is calling RemoveAtSwap after the NotifyEnd callback which is not safe if the ActiveAninNotifyState array is modified by the callback. WorkAround: Add a Delay node befo ...