Unreal Engine Issues
Unreal Engine Issues
Infinite loop in UAnimSequence::ExtractRootMotion when sampling backwards
UE - Anim - Gameplay - Dec 6, 2021When sampling root motion backwards we can hit an infinite loop in ExtractRootMotion. This happens if the initial sample time + negative delta is off the end of the animation clip. In that case FA ...
Metahuman Hair Physics becomes jittery when 32x Antialiasing is enabled in MRQ
UE - Anim - Sequencer - MRQ - Aug 15, 2023Enabling 32x AntiAliasing on an MRQ causes metahuman hair physics to become twitchy in the image sequence output. ...
UE5.4 Regression - crash when disabling shader optimization while raytracing is enabled on D3D12
UE - Rendering Architecture - Shaders - Jul 15, 2024Certain interactions between a Rect Light with a Light Function and a Post-Process volume lead to a check() when compiling a Ray Tracing PSO for tracing lights. This check() only happens when shader ...
Shader Symbols not Generated for Windows Platform when r.Shaders.Symbols=1
UE - Rendering Architecture - Shaders - Feb 28, 2025Shader symbols are not generated for the Windows platform. Attempts were made to set the r.Shaders.Symbols=1 value in the projects DefaultEngine.ini, the engines ConsoleVariables.ini and the engine ...
Ragdoll Physics do not Function Properly on a Mirrored Skeletal Mesh
UE - Simulation - Physics - Dec 1, 2015Selecting the default character/skeletal mesh (or any skeletal mesh) in the viewport, right-clicking and transforming it so it mirrors on the X,Y, or Z axis will cause the physics to act erratically ...
Setting the brush type of a custom volume BP causes the editor to crash
Tools - Nov 17, 2014Setting the brush shape of the root component for a custom volume BP causes the editor to immediately crash. ...
Projectiles transferring additional velocity when stepped on.
UE - Gameplay - Jul 10, 2015If a player steps on projectiles they have their velocity overridden and are launched away from the projectile. ...
The Random Audio Node Function 'Randomize Without Replacement' does not Function Correctly
UE - Audio - Apr 6, 2015When attempting to play random sounds using the 'Random' node within the audio editor, the 'Randomize Without Replacement' does not function as explained via the tooltip. The options says that if y ...
Changing Effects Quality with Console Command Resets Audio Playback of Packaged Game
UE - Graphics Features - Feb 26, 2015When packaging a product for Windows (64) with an 'Event Begin Play' node executing a UI sound to play, and changing the Effects Quality within the console, restarts the audio playback for that soun ...
LIVE: A Local Variable cannot have its type changed if another local variable with the same name in a different function is in use
UE - Gameplay - Blueprint - Nov 6, 2014Two local variables with the same name in two different functions still interact with each other in some way. This was reported in TTP 346132 and fixed in that case, but currently if a local variabl ...