Unreal Engine Issues
Unreal Engine Issues
The speed of Animators is increased in exports
TM - Tools - Jun 23, 2026Reported in SF [Link Removed] When setting Animator tools to use Collision mode for video, the loop speed of the animator will be twice as fast as specified in the video export. Attached a sample ...
Translucent meshes randomly flicker when using VSM
UE - Rendering - Features - Jun 23, 2026Flickering can occur on translucent materials, usually in the distance when there is at least one directional light and when using VSM. Flickering seems highly dependent on framerate and timing. L ...
Apply mesh paint Blueprint instance changes and save fails
UE - Rendering - Architecture - Materials - Jun 22, 2026After mesh painting on a BP Static Mesh Actor, and "Apply instance changes to Blueprint" the added virtual texture is removed with the log:LogTexture: Display: Building texture TwoD: /Game/FirstPers ...
Rare crash in FWidgetAnimationState::OnStopped
zComponent - Archive - Jun 22, 2026The FWidgetAnimationState::OnStopped delegate is getting created when the widget anim state is being destroyed and then queued to be executed later. Something is happening between the queue and the ...
Memory leak with -renderoffscreen and uncapped frame rate
UE - Rendering - Architecture - RHI - Jun 22, 2026A customer reported that -renderoffscreen leaks when running with an uncapped frame rate ...
Crash when using ListStreamingTextures with VirtualTexturePrefetchMips
UE - Rendering - Architecture - Jun 16, 2026The ListStreamingTextures command causes a crash in FRenderAssetStreamingManager::HandleListStreamingRenderAssetsCommand when there is a virtual texture that uses crashes when encountering one of t ...
Substrate Single Layer Water material fails to compile in blendable Gbuffer mode when using the Single Layer Water BSDF node
UE - Graphics Tools - Terrain - Water - Jun 16, 2026When using Substrate in Blendable GBuffer mode, a material with the single layer water BSDF node produces a shader compiler error : MaterialEditorStats: Error: [SM6] Shader debug info dumped to: "\ ...
Non-Nanite meshes not being correctly cleared from all levels of VSMs on actor destruction when r.Shadow.Virtual.NonNanite.IncludeInCoarsePages=0
UE - Rendering - Graphics Features - Shadows - Jun 15, 2026When using the r.Shadow.Virtual.NonNanite.IncludeInCoarsePages=0 to optimize VSM performance there are errors in how the VSM is invalidated when actors are destroyed with non-Nanite meshes. The curr ...
Crash when applying Decal material with Distance Cull Fade node to Decal Actor
UE - Rendering - Architecture - Materials - Jun 15, 2026The Editor crashes when applying a Material with a Distance Cull Fade node to a Decal Actor. Fatal error: [Link Removed] [Line: 730] Missing uniform buffer at slot 2, stage SF_Pixel. Please check ...