Unreal Engine Issues
Unreal Engine Issues
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 ...
FD3D12BindlessResourceManager::GrowCPUHeap will cause GPU heap activation whether it's needed or not
UE - Rendering Architecture - RHI - Sep 11, 2025The ctor of FD3D12BindlessResourceManager implies that GPU heap activation is intended to occur lazily with ERHIBindlessConfiguration::RayTracingShaders, however any call to FD3D12BindlessResourceMa ...
Blur effect caused by command Stereo On
UE - Platform - XR - Jan 22, 2015When the console command "Stereo On" is used to start a game in fullscreen, objects in the level appear with a slight blur. Pressing Alt+Enter will "refresh" the screen and eliminate the blur effec ...