Unreal Engine Issues
Unreal Engine Issues
GenerateVisibileRayTracingMeshCommands Severely Reduces Foliage Performance Even if no RayTracing is Used
UE - Graphics Features - Lumen - Sep 18, 2019GenerateVisibileRayTracingMeshCommands Severely Reduces Foliage Performance Even if no RayTracing is Used. Found in 4.23 CL# 8386587 and 4.24 CL# 8748719 ...
Shader Complexity viewmode doesn't work on masked & pixel depth offset material
UE - Rendering Architecture - RHI - Nov 11, 2019Materials with mask and pixel depth offset appear to be empty in Shader Complexity viewmode in SM5. Both happens in material preview and world viewport. [Image Removed] Works fine in ES31. [Ima ...
Default pose is displayed in the first frame when playing with Sequencer
UE - Anim - Sequencer - Jan 28, 2020The problem is that the camera is evaluated when the sequencer is played, but the animation does not seem to play properly. It seems that the licensee found this problem when implementing it in C++, ...
Cannot navigate to native function source code from blueprint editor
UE - Foundation - Core - Feb 1, 2020REGRESSION RANGE WORKING: 9404494 (right before Dev-Core copy up at 9405827 BROKEN: 9407021 (Dev-Networking copy up) NavigateToFunctionSource: Unable to find symbols for 'UPaperFlipbook::GetNumFr ...
Text3d renders backwards.
UE - Rendering Architecture - RHI - Aug 10, 2020When adding a Text3D actor (after placed as Child Component), into viewport the actor renders backward and not as expected. I was able to reproduce this issue in 4.25.3, but did not have this issue ...
Recently created projects using the Live Launcher do not show up in Editor Recent Projects menu
UE - Editor - Workflow Systems - May 26, 2021Recently created Projects not showing up in editor ...
Landscape smooth and flatten tools deform the terrain incorrectly
UE - Graphics Tools - Terrain - Landscape - May 25, 2022The Landscape smooth and flatten tools can deform the landscape incorrectly causing chunks of the landscape to be removed (see attached image). ...
Crash editor when raytracing is enabled and enter kanji characters into TextRenderActor
UE - Graphics Features - Ray Tracing - Apr 25, 2024The editor crashes when entering Kanji characters into TextRenderActor with raytrace enabled. This does not happen with English text. ...
Curve Table Editor's "Add Key" functionality does not work and appears to not be implemented..
UE - Editor - Workflow Systems - Aug 5, 2024Creating a new Curve Table asset, and then trying to use the right-click menu "Add Key" option does not do anything. FRealCurveModel still has the function, but it is left intentionally empty despit ...
Structured log automated decimal number tests fail in languages / cultures that use commas instead of periods
UE - Foundation - Jul 17, 2025The following Localisation Tests in "Engine\Source\Runtime\Core\Tests\Logging\StructuredLogFormatTest.cpp:275" TestLoc(LOCTEXT("Float", " {Float} "), ANSITEXTVIEW(R"(128.25)")); TestLoc(LOCTEXT ...