Unreal Engine Issues
Unreal Engine Issues
Clothing tool may generate an unsmooth display mesh on 4.26
UE - Simulation - Physics - Character - Mar 23, 2021This is related to the optimization applied in CL#13181876. Binding simulation mesh to display mesh can't find the nearest triangle when a triangle is located near the AABB boundary. ...
[Sequencer][Audio] - Soloing a nested audio track mutes all tracks
UE - Audio - Sequencer - Jan 20, 2022When soloing an audio track in sequencer, all the tracks are muted and nothing in soloed. Attached video shows Mute working correctly followed by Solo not working[Link Removed] Cannot reproduce i ...
ActorComponent's focus changes unintentionally
UE - Gameplay - Blueprint Editor - Apr 13, 2022If you do not compile at the inherited actor, the problem does not occur. ...
Modules tab fails to load when rebooting a project.
UE - Editor - Workflow Systems - Apr 19, 2022If the user makes a project where the modules tab appears in Tools > Debug and then reboots the project, the modules tab disappears. This only happens if the project that is loaded has the module ta ...
PIE crash on infinite loop in a BP construction script
UE - Gameplay - Blueprint Runtime - Oct 19, 2023From the [Link Removed]: We had an issue where PIE was being stopped due to an "infinite loop" being detected in one of the blueprints construction script. This was also crashing the editor as the ...
Lumen scene view - spot light cut off
UE - Rendering Architecture - Dec 1, 2023This looks to be an issue with shadows in Lumen Direct Lighting, and might be coming from the "Batched lights" pass. ...
Opening Sprite assets or Paper Flipbook crashes the engine in 5.3
UE - Gameplay - Paper2D - Apr 16, 2024Licensee was not able to open any Sprite asset file in 5.3 without it causing a crash. They were able to avoid this by disabling raytracing in the project. ...
Crash when moving map assets used as level instances
UE - World Creation - Worldbuilding Tools - Level Instances - Mar 10, 2025Ensure triggered when creating Scene Proxy for GroomComponent
UE - Rendering Architecture - RHI - Apr 30, 2025When a room component is added in C++ via the actor constructor, an ensure is triggered from precaching and the groom component. Behavior also observed on UE5/Release-5.5, CL: 40988944 ...
GPU event descriptions are not properly formatted in Insight
UE - Foundation - Insights - Jun 24, 2025Context Unreal Insights displays Timing Insights that can include GPU timing information. Rendering code such as FDeferredShadingSceneRenderer::RenderPrePass() generate such events.Problem Certain f ...