Unreal Engine Issues
Unreal Engine Issues
SkyLight IBL looks blurry on Android
UE - Platform - Mobile - May 12, 2021Fbx importer: Issue when reimporting staticmesh base LOD and there is some custom LOD
UE - Editor - Content Pipeline - Import and Export - Mar 2, 2023When we reset the material to fbx we should take care of the LOD since we will change/reorder the material slot array. ...
[Debug Tools][Crash] - Enabling au.editor.ForceAudioNonStreaming causes editor to crash the next time the user PIEs
UE - Audio - May 31, 2022Encountered while going through some debug commands. Repro 3/3. Crash Reporter Link: [Link Removed]Assertion failed: ChunkIndex != 0 [File:E:\User\Engine\Source\Runtime\Engine\Private\AudioStreaming ...
Sequencer - if you set the Take Separator to - rather than _ the New Take naming will mess up
UE - Anim - Sequencer - Jun 9, 2026When using a non-default take separator (eg "-") the "New Take" option produces a malformed proposed name for the take. ...
Building in VS fails if Application.ico is missing
UE - Foundation - Core - Mar 25, 2015When building a project in VS, the build process will fail if Application.ico is missing from the /Build/Windows/ folder. User reported seeing this when checking in/checking out a project on differ ...
Typos in Array.h
UE - Foundation - Core - Dec 28, 2015In Array.h, there are a few typos in comments. In 4.9.2 and 4.10, the typos occur at line 2335 and 2359. *@param InIntem Item to be added. In Main, the typos are located at lines 2471 and 2495. ...
When using a SpeedTree asset, a Zero Triangles warning appears
Tools - Nov 25, 2019When exporting from SpeedTree with LODs + billboard, It seems that a warning is issued by including a material used only by Billboard. Is there a way to deal with it? ...
Shadow Flickering with Lighting Channels
UE - Graphics Features - Shadows - Oct 27, 2023It looks like static meshes can invalidate large numbers of VSM pages when the geometry and the light are not on light channel 0. ...
NavMesh generation should not care for Actors that are hidden in the Editor.
UE - AI - Navigation - Aug 5, 2025The problem is that the Cube is still loaded but "HiddenEd". It's AActor::bHiddenEdLayer property is set to true by the WorldPartition System. The Actor is dirty which makes the WP system pin it (wo ...
AbilitySystemComponent::RepAnimMontageInfo causing push model validation ensure
UE - Gameplay - Gameplay Ability System - Jun 12, 2026When iterating through the struct’s properties to check if the values have remained the same, it seems as though the SectionIdToPlay has changed, causing validation to fail (see attached log snippet ...