Unreal Engine Issues
Unreal Engine Issues
A sampling result of DistanceFieldAOHistory is shifted to a wrong position.
UE - Graphics Features - Aug 21, 2024DistanceFieldAOHistory introduces ghosting at low scalability and low screen percentages. This can lead to AO artifacts and a ghosting effect from the character. This issue was also observed on //U ...
Mesh Paint mode's Texture Paint has obvious artifact with UV seams
UE - Rendering Architecture - Oct 8, 2024Mesh Painting Texture Paint tool can miss some pixels along UV seams, even with "Enable Seam Painting" set to True. This appears to be because of the difference between rasterization and sampling. ...
The DistanceCurveModifier generates Distance Curves with zero values for Root Motion animations
UE - Anim - Gameplay - Jun 30, 2025The DistanceCurveModifier data modifier generates curves that return zero values only. This issue has been tested on several Animation Sequences with enabled Root Motion and always occurred. ...
Activating physics on a component will break movement for the component
UE - Gameplay - Aug 4, 2015Setting simulate physics for a component of an actor will cause that component to not react when the actor root is updated. ...
Clipping bsp brush rotates clipped face on brushes that have their X,Y,Z values altered
UE - LD & Modeling - Modeling Tools - BSP - Sep 17, 2015If a bsp brush is rotated, then the brush clipping feature is used the "Brush Clipping" feature will rotate the created face by 90 degrees or disappear entirely (if set at an angle). ...
Game Instance being initialized twice in Android build
UE - Gameplay - Feb 11, 2015When a project with a C++ custom game instance is packaged for Android, the game mode is initialized twice from different paths. Device log files attached ...
LIVE: Multiplying an FQuat*FQuat via pass-by-value crashes editor on open
UE - Foundation - Core - Nov 5, 2014If a function takes in an FQuat value and then multiplies it by an FQuat, the project will build properly but then crash when trying to launch the project in the editor. Example project available b ...
Distance Field AO leaving trail of occlusion shadow where character mesh has been.
UE - Graphics Features - May 21, 2015When using DFAO and moving around the world a trail will be left behind the where the player has been while PIE/Standalone game is being used. This is cleared when exiting these modes. **Video att ...
Destructible component doesn't register hit event with Landscapes
UE - Simulation - Physics - Destruction - Aug 9, 2016Destructible component doesn't register hit event with Landscapes. The only way to get the Destructible to register the event is to enable Impact Damage on the Destructible mesh. User Description: ...
Oculus mirror window goes black when headset removed for any mirroring mode besides 0
UE - Platform - XR - Nov 16, 2016If using any hmd mirroring mode besides 0 on Oculus, when the headset is removed, the mirroring window goes black in a packaged build, or in -game, for example: UE4Editor.exe VrTemplate4x15 MotionCo ...