Unreal Engine Issues
Unreal Engine Issues
[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 ...
Depth of field rendering artifacts - flickering and masking
UE - Rendering - Architecture - Jan 16, 2024Flickering and large flashes can be seen on reflective objects that are out of focus with DOF enabled. DumpGPU shows that artifacts are visible in TSR . ...
Runtime Virtual Texture (RVT) baked mips using Streaming Virtual Texture (SVT) only bakes the base colour
UE - Graphics Features - Sep 13, 2024Using Streaming Virtual Textures for the lower mips of an RVT using Base Color, Roughness, Normal seemingly leads to both roughness and normal being sampled as 0. This causes a significant shading a ...
IKeyArea::CreateCurveEditorModel is not adding custom property channel name.
zComponent - Archive - Nov 25, 2025When you have a custom float channel and run the above, It works great if it's a regular 'MovieScene3DTransformSection' : LogPython: [ {channel_name: "Location.Y", section: "/Script/MovieSceneTrack ...
Shadows become disabled for Datasmith imported lights on resync
TM - Interoperability - Aug 4, 2026Reported in SF [Link Removed] For Datasmith models containing lights, resynchronizing the model after any changes will cause any lights that had shadows enabled prior to the sync to have that setti ...
Editor window changes size each time the same project is opened
Tools - Apr 6, 2015The editor window is slightly bigger each time you open the same project. This doesn't persist over to any other project. I also checked in 4.8 from p4, this also occurs in: 4.8 /UE4/Promoted-CL ...
Placing a ' - ' in theproject name will cause the Android build to fail
UE - Platform - Mobile - Mar 5, 2015Android Build will fail if there is a hyphen in the Android Package Name. The user points out that this may be because of how Java works. I have attached my build failed logs. ...
Replicated variables defined in Actor Component blueprints do not actually replicate
UE - Networking - May 1, 2015Replicated properties defined in an actor component blueprint are not being replicated because UActorComponent::GetLifetimeReplicatedProps isn't adding the blueprint properties to the OutLifetimePro ...
Particle disappears if it is using PSA_Velocity and setting custom time dilation 0
UE - Graphics Features - Dec 7, 2016A licensee reported some of their particles disappear when setting the actor's custom time dilation 0. This seems to happen when a particle is using PSA_Velocity as Screen Alignment. This repros in ...
Sequence node numbering error when adding execution pin.
UE - Gameplay - Blueprint - Dec 26, 2018When using the "Insert execution pin after" option with a sequence node "Then 0" gets removed. ...