Unreal Engine Issues
Unreal Engine Issues
GetStaticRayTracingGeometries doesn't check if mesh has ray tracing disabled
UE - Graphics Features - Ray Tracing - Nov 12, 2025An ensure is hit for static raytracing geometry because skeletal mesh assets that had ray tracing disabled were not handled in: FSkeletalMeshSceneProxy::GetStaticRayTracingGeometries The concurrent ...
Crash when applying a LandscapeVisibilityMask material to a Landscape's material slot
UE - LD & Modeling - Terrain - Landscape - Apr 28, 2017Crash that occurs when applying a masked material (with LandscapeLayerBlend and LandscapeVisibilityMask) to a Landscape's material slot. This is a regression: broken in 4.16.0 CL 3405315 worked in ...
Editing an instanced variable that is nested in two other instanced variables causes a crash
UE - Gameplay - Blueprint - Jul 2, 2015If a user edits a instanced variable which is nested inside two other instanced variables in blueprint editor, a crash will occur ...
Changing LOD materials on Merged Actors Crashes Editor
UE - Gameplay - Sep 12, 2016If you merg actors with LODs with the setting LODSelection Type set to "Use all LOD levels" then apply a material to the element 0 assigned to LOD1 the engine will crash. NOTE I wasn't able to rep ...
[CrashReport] UE4Editor_Engine!UAnimMontage::IsValidAdditive() [animmontage.cpp:702]
OLD - Anim - May 19, 2016Error message: Stack overflow - code c00000fd (first/second chance not available) Source Context: 687 if (SyncGroup != NAME_None) 688 { 689 CollectMarkers(); 690 ...
Editor Crash with corrupted asset when opening within level or via the content browser.
Tools - Jan 5, 2017Editor will crash when a skeletal mesh has been added to a level and then reopening the project later if you try and access this level. If you attempt to open the skel meshes in the content browser ...
Reordering Instance Editable arrays in a Character Blueprint breaks the array
Tools - Nov 14, 2017When re-arranging an array that has been added to a character blueprint, the array adds an empty value to element [0] and leaves it in a broken state. I tested this using the Level blueprint as well ...
LevelSequenceActor transform offset for Sequencer lost on value changed
UE - Anim - Sequencer - Nov 17, 2025Toggling Lock, Pin, Ignore on subsequences or adding new transform key on a character inside a subsequence the Actors lose the LevelSequenceActor transform offset they have at preview and go back to ...
Render in Movie Render Queue with High Resolution Tiling Overlap causes dark pixels
UE - Anim - Sequencer - MRQ - Jun 13, 2024From UDN: thanks for your reply. I have attached a very basic scene with a MRQ settings preset. The only thing I have changed in the scene is that I've set the Camera Exposure to manual, as it do ...
[CrashReport] UE4Editor_LevelEditor!FLevelEditorContextMenu::FillMenu() [leveleditorcontextmenu.cpp:178]
Tools - Aug 15, 2017This is a trending crash coming out of the 4.17.0 release User DescriptionsIt Stopped when I tried to place a mesh in thrid person. Source Context 164 if (GEditor->GetSelectedComponentCou ...