Unreal Engine Issues
Unreal Engine Issues
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 - 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 - 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 ...
Call In Editor functions not working in blueprints
UE - Editor - Developer Usability - Dec 19, 2025Context When selecting a component on an actor, any CallInEditor functions on the component's class appear as buttons in the details panel. Problem The CallInEditor functions don't execute in Blu ...
Tooltips not appearing in Editor when hovering over assets due to Slate Cursor Move settings
UE - Editor - UI Systems - Slate - Feb 3, 2026User noticed that when Slate.EnableSyntheticCursorMoves is set to false the editor UI tooltips no longer display. As noted by the user, modifying Slate.CursorSignificantMoveDetectionThreshold to at ...
Bug - Vertex Interpolator exposing parameters to instance even if its not connected
UE - Rendering - Architecture - Materials - Feb 17, 2026Parameters attached to the input of a Vertex Interpolator Material Expression are visible in the Material Instance, even if the output of the Vertex Interpolator Material Expression is not connected ...