Unreal Engine Issues
Unreal Engine Issues
Creating 3 player splitscreen causes viewport to go black on PIE
UE - Graphics Features - Feb 13, 2015If a game is set to play with 3 player splitscreen, starting the came will cause the viewport to go completely black. Does not occur with 2/4 players. Does not occur in standalone ...
Tangent normals are recalculated by default on skeletal meshes with blend shapes
UE - Graphics Features - Nov 8, 2016In 4.13 if you imported a skeletal mesh with a blendshape and run the blend shape. The normals are not recalculated. To Recalculate the normals during runtime you need to edit the Console Variables ...
Particle emitter follows camera on certain Android devices
UE - Platform - Mobile - Dec 5, 2016When running a launched or packaged version on an Android device, if there is a particle emitter, it follows the camera looking up or down. If you have more than 1 particle emitter, it seems to corr ...
Raw Input plugin fails to process some negative values
UE - Gameplay - Input - Aug 22, 2023Came from a UDN: [Link Removed] Proposed fix is to change `FRawInputWindows::ParseInputData` to use this logic instead: ``` ... USHORT BitSize = ValueCapsBuffer[iValue].BitSize; LONG SizeMask ...
Niagara Fluids Plugin creates a memory reference of any saved level by only being active, before being actually used.
UE - Niagara - Aug 21, 2024While Niagara Fluids Plugin is active it creates a memory reference of any saved level regardless of being actually used. Simply enabling the plugin shows a memory reference while deleting the level ...
BSOD when launching Twinmotion on NVIDIA 50-series GPUs with 576.02 Drivers
TM - Rendering - Apr 22, 2025Reported from multiple users. NVIDIA RTX 50-series GPU users are reporting BSODs when attempting to launch Twinmotion with the latest drivers installed. The crashes occur on the 576.02 driver versi ...
Disabling 'Use Landscape Lightmap' option Skewing Procedural Foliage Instances
UE - LD & Modeling - Terrain - Landscape - Oct 24, 2016Disabling the 'Use Landscape Lightmap' when using procedural foliage, will skew the placed instanced meshes. Regression? Yes, this issue did not occur in the 4.13.1 release. ...
The Spawn Actor from Class node's dropdown menu gets cut off when zoomed out
UE - Gameplay - Blueprint - Mar 12, 2015The Spawn Actor from Class node's dropdown menu gets cut off when zoomed out. Reproduced in 4.7.2 binary and Main (//depot/UE4/Promotable-CL-2473270) ...
Collections reset when the engine upgrades project
UE - Editor - Content Pipeline - Content Browser - Jul 8, 2015When you upgrade your project to a new version of the engine, your Collections are deleted from the Collection setting. ...
Delay nodes occasionally don't fire the "Completed" output in a nativized build.
UE - Gameplay - Blueprint - Jun 13, 2018This happens when the 32-bit LatentUUID signed integer that we generate for the delay node starts with "-1" when converted to an FString (e.g. "-1824950080"). During compilation, we pack latent fun ...