Unreal Engine Issues
Unreal Engine Issues
D3D HUNG crash - FD3D11DynamicRHI::RHIReadSurfaceFloatData()
UE - Graphics Features - Jan 18, 2017This is one of the widespread D3D Hung crashes that have existed since 4.14. This particular callstack has affected around 300 users. The issue has been successfully reproduced on a home PC. Dxdi ...
Volumetric Lightmaps Persist When Opening Different Level
UE - Graphics Features - Lumen - Feb 24, 2020When moving between levels with built lighting volumetric light maps persists between levels. Workaround: Load the same level twice. Found in 4.24.2 CL#11100242 Reproduced in 4.26 Main CL#11574810 ...
Double-Clicking a Camera in the World Outliner Causes it to Rotate to Face the Direction in the Viewport
Tools - Sep 24, 2015Double-clicking on a camera, which normally takes you to its location, also rotates the camera so that it faces whatever direction you were facing in the viewport prior to clicking on the actor in t ...
Copy/Pasting Behavior Tree Nodes Reverses Decorators
UE - AI - May 20, 2016Copying and pasting behavior tree nodes reverses the order of any decorators on the node. Found in 4.11.2 binary. Reproduced in 4.12 Preview 4 binary. Regression? Yes. This does not occur in 4.10 ...
Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling
UE - Editor - Workflow Systems - Jan 11, 2022This is a regression.This does not affect UE5. Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling. In 4.26 and UE5 the code compiles without issue, and the user ...
Packaging with Steam VR plugin disabled requires an IDE
UE - Platform - XR - Jul 20, 2017Disabling the SteamVR plugin in a Blueprint-Only project causes the packaging process to require an IDE to complete, as it requires compilation. Regression?: Yes This did not occur in 4.16.2 Note: ...
Missing vegetation created via PCG on export
TM - Rendering - Feb 21, 2025If you compare this 2 automation tests done on Swiss chalet project, you could see that some parts of vegetation are missing : [Link Removed] [Link Removed] The diff between the 2 exports is caus ...
IsOverlappingActor is always returning false
UE - Gameplay - Sep 23, 2015When you use the IsOverlappingActor node to determine whether or not something is overlapping another actor, it returns false regardless of whether or not you're actually overlapping another actor. ...
Print String does not print to the viewport screen from the Construction Script
UE - Gameplay - Blueprint - Aug 11, 2015Print String does not print to the viewport screen from the Construction Script, even if Print to Screen is enabled in the Print String node. Reproduced in 4.7.6 binary, 4.9 Preview 3, and Main (/ ...
[Synth][Tone Generator] - Editor crashes when Starting Synth Component Tone Generator
UE - Audio - Mar 29, 2022Starting a SynthComponentToneGenerator crashes the editor with the following assert:Assertion failed: bSuccess [File:D:\build\++UE5\Sync\Engine\Source\Runtime\SignalProcessing\Private\AudioBufferDis ...