Unreal Engine Issues
Unreal Engine Issues
Unreal Editor crash on Datasmith import with VrayBlend Materials
UE - Editor - Content Pipeline - Datasmith - Importer - Jun 16, 2020It seems like VrayBlend materials are crashing the Engine when importing them with Datasmith. This is a regression from 4.24.3 (CL-11590370) where the file imported successfully. This was reported ...
Animation Sequence Keyframe icons missing after adding a Keyframe
UE - Anim - Runtime - Jan 13, 2023Regression: Tested in UE5/Release-5.0 at CL 20979098, this issue occurs there as well so this is not a regression. This issue occurs with any bone and setting any amount of Keyframes on any frame. ...
PIE crash on infinite loop in a BP construction script
UE - Gameplay - Blueprint Runtime - Oct 19, 2023From the [Link Removed]: We had an issue where PIE was being stopped due to an "infinite loop" being detected in one of the blueprints construction script. This was also crashing the editor as the ...
Virtual Texture Data GetNumMips reports one fewer mip than expected
UE - Graphics Features - Feb 27, 2025FVirtualTextureBuiltData::GetNumMips() can return 1 fewer mip than it should due to a potential clamping issue at the end of FVirtualTextureBuilderDerivedInfo::InitializeFromBuildSettings() where it ...
TraceHitInfo not returning correct PhysMat when Changed at Runtime via MID
UE - Simulation - Physics - Jan 11, 2016Line Traces are not correctly returning the Physical Material Info when that information is changed at runtime via a Override Physical Material or a Set Physical Material via a Dynamic Material Inst ...
Editor crashes if reopened and a row is selected after moving datatablerow editor window in a csv data table
Tools - Apr 24, 2015If a user moves the row editor window in a csv datatable, then saves, closes, and reopens the editor, the editor will crash if the user then attempts to select a datatable row in the csv datatable w ...
Landscape LODDistanceFactor not applied to levels that were not loaded when it is changed
UE - LD & Modeling - Terrain - Landscape - Mar 13, 2015Landscape LODDistanceFactor is not applied to levels that were not loaded when it is changed. Sample content shows a landscape in this state. Other landscape properties probably suffer from this s ...
Tiled Landscapes imported with inverted Y axis rotation in World Browser
UE - LD & Modeling - Terrain - Landscape - Feb 23, 2015When importing tiled landscapes into the world browser, the landscape tiles appear with inverted Y axis rotations. ...
Launch on for Win64 produces fatal error
UE - Foundation - Core - May 18, 2015Creating a C++ project and then attempting launch on for Windows 64 causes a fatal error crash in 4.8 preview 2 binary from launcher. Project recovers from fatal error and can then package and run . ...
Releasing left mouse button is seen as click on dropdown menus
Tools - Mar 13, 2015Drop-down selection menus will select on mouse release. This only occurs for options under "Current Asset". I was able to click a drop-down, then hold down the left mouse button and let go over "Cle ...