Unreal Engine Issues
Unreal Engine Issues
Animation Interpolation will not occur if the Evaluation Rate is set at the same value as skipped frames
OLD - Anim - Nov 18, 2016When an animation is skipping frames, interpolation will not occur if the Max Evaluation Rate is set to the same number as the number of frames being skipped (or 1 frame higher). The Eval Rate will ...
FName no longer equals FName_None when constructed with a trailing underscore and digits in range of 1-9
UE - CoreTech - Apr 15, 2025When an FName is created with a trailing underscore and any number of digits in the range of 1-9 the trailing digits are used as the internal number value for the FName lookup. This results in the F ...
Memory leak in World Settings Window
Tools - Jan 20, 2016When the world settings window has been opened but is not visible, the destructor for FLightmapCustomNodeBuilder is never called to remove the editor delegates. Opening a large number of maps has be ...
Skeletal Mesh Collapses with OpenGL ES3.1 on Tegra K1 devices
UE - Platform - Mobile - Oct 18, 2016When launching to an Android device that supports ES3.1 skeletal meshes seem to collapse in game. ...
HLSLCC crashed on parsing UAV related instruction
UE - Graphics Features - Oct 10, 20191.glsl_type with image was not fully inited with HlslName field set, causing the crash 2.seems many types of op are not support by current hlslcc, cause error msg. e.g. RWTexture2D.Load[Image Remo ...
Hardware Raytracing on Lumen can cause a crash on AMD Radeon GPUs
UE - Graphics Features - Lumen - Jul 29, 2025Hardware Raytracing support can cause a crash on AMD Radeon GPUs when creating the RT pipeline state. ...
Blend weight of animations passed to notifies are incorrect
OLD - Anim - Jan 13, 2015It's currently not possible to prevent notifies from firing by setting their TriggerWeightThreshold. When stepping into the code that fires the notifies I found that the given InstanceWeight was alw ...
Text in Content Menues for 21:9 Ultra-Wide Screen are Stretched
UE - Editor - UI Systems - Slate - Apr 14, 2015A user has requested further compatibility support for his Ultra-Wide monitor. I attempted to troubleshoot the users issue but we have no ultra-wide in house to test the issue. We lack the document ...
High Quality Gaussian DoF not working on iOS Metal
UE - Platform - Mobile - Sep 2, 2016The High Quality Gaussian DoF does not work when deployed to an iOS device that supports Metal. After enabling the setting within Project Settings to support Metal (A8 chipsets) and above, and then ...
Crash when trying to export unsupported Paragon Skeletal Mesh asset in 4.23
UE - Editor - Content Pipeline - Import and Export - Sep 11, 2019When the user tries to export the Skeletal Mesh of TwinBlast (a paragon character that can be purchased off the marketplace) in 4.23. As of the time of logging this bug it is not supported in 4.23, ...