Unreal Engine Issues
Unreal Engine Issues
Draw Brush Polys setting does not display translucent Material
Tools - Oct 13, 2017The Draw Brush Polys setting does not display translucent Material in versions 4.17 and higher, instead, checking the option appears to do nothing. This issue does not occur in 4.16.3, this issue is ...
GAS: Ability that destroys owning actor on activate causes crashes due to ABILITYLIST_SCOPE_LOCK
UE - Gameplay - Gameplay Ability System - Oct 31, 2023A GameplayAbility that destroys its owning actor inside ActivateAbility() causes a crash, because actor destruction will modify the ability list but ActivateAbility() is called within an ABILITYLIST ...
Changing the "Color Vision Deficiency Preview Type" setting under "Editor Preferences" does not work
Tools - Sep 11, 2017Making changes to the "Color Vision Deficiency Preview Type" under the "Editor Preferences" does not change the Color Vision Preview. Regression: Yes Works in: 4.16.3-3561208 Does not work in : ...
Level Sequence option "Allow Level Edits Only" causes Frame Rate drop when used
UE - Anim - Sequencer - Aug 15, 2017When using the new option "Allow Level Edits Only" there is a drastic frame rate drop while playing the sequencer. This frame rate drops when only using this option. Versions Tested: 4.16.3 - CL: 3 ...
[CrashReport] UE4Editor_CoreUObject!TFastReferenceCollector<1,FGCReferenceProcessor<1>,FGCCollector<1>,FGCArrayPool,0>::ProcessObjectArray()
UE - Foundation - Core - UObject - Jul 19, 2017This is a common crash affecting users in 4.16. Over 100 users have been affected, although they have not provided additional information. Source Context 469 TokenStreamIndex++; 47 ...
Sequencer animations using Skeletal Mesh Pose don't play properly if following another sequence with an animation using Keep State
UE - Anim - Sequencer - Feb 20, 2019The bug affects skeletal mesh animations when played in sequencer with AnimBP after another animation which was set to Keep State. This is a follow-up to [Link Removed]. Two animations now play cor ...
Callling "Get[AxisMapping]" or adding AxisMapping Event node in blueprint will break code input implementation for that axis mapping
UE - Gameplay - Input - Aug 17, 2016When character input is defined in code, adding a call to the Get[AxisMapping] node in blueprints causes input for the specific mapping to fail. Note: This only affects code based input, Blueprint ...
BSP brushes get Clipped or Disappear relative to the Surface Normals of a nearby Brush when Deleting/Flipping Faces
UE - LD & Modeling - Modeling Tools - BSP - May 1, 2017While testing this issue it was interesting to discover how the surrounding BSP's were affected. They seemed to clip/disappear according to the surface normals of the deleted brushes. There is a si ...
Missing Triangles on scaled MetaHuman assets with Nanite enabled
UE - Graphics Features - Nanite - Feb 19, 2025Additional information: only happens when all three conditions are true: the camera is very close to the character, the MH is Nanite, and a scaled mocap animation is appliedmaterial is opaque, shows ...
Reflections Rendering Incorrectly in SM4
UE - Graphics Features - Dec 7, 2017Reflections are rendering incorrectly in Rendering Preview Level SM4 in 4.18, but were working as expected in 4.17. This is a regression. When I reproduce the issue, I get results similar to issue ...