Unreal Engine Issues
Unreal Engine Issues
LineTraceSingleByObject not Returning Valid Physical Material
UE - Gameplay - Mar 22, 2016Attempting to perform an is valid check on a physical material from a FHitResult returns invalid. This does not occur when using a blueprint setup, it only seems to occur when using code. Found ...
HLSLCC crashed on parsing UAV related instruction
UE - Graphics Features - Oct 10, 20191.glsl_type with image was not fully inited with HlslName field set, causing the crash 2.seems many types of op are not support by current hlslcc, cause error msg. e.g. RWTexture2D.Load[Image Remo ...
Crash when Deploying to iPad Air with BC4 Texture Compression Setting
UE - Platform - Mobile - Jun 7, 2016App/project crashes when setting a texture's compression settings to BC4 and deploying to the iPad Air. As the user in the op states on AnswerHub, the problem seems to lie with specific texture com ...
Linux: UI scale is sometimes not 1.0 on non-high-DPI monitors
UE - Platform - Linux - Nov 7, 2017At the moment, UI scale is calculated on Linux from physical monitor dimensions (obtained ultimately from EDID) and not system scale. The granularity is 0.25, so scale can be 0.25, 0.5, 0.75, 1, 1.2 ...
InterpToMovement Component Causes Crash During PIE
UE - Gameplay - Feb 23, 2016When using an InterpToMovement component in a blueprint with the "Auto Update Tick Registration" and "Auto Register Updated Component" options unchecked, PIE will result in a crash. Found in 4.10. ...
Set Component Tick doesn't work on Cascade Particle Systems
UE - Niagara - Jul 31, 2019Changing the Component Tick Interval via Blueprints has no effect on Cascade particle system components. Tested in 4.21.2 (CL - 4753647), 4.22.3 (CL - 7053647), 4.23 P3 (CL - 7445012), 4.24 (CL - ...
Unable to compile Engine for Debug Editor when bDebugBuildsActuallyUseDebugCRT is set to true
UE - Foundation - Cpp Tools - UnrealBuildTool - Feb 10, 2016When building the source for the engine in Visual Studio 2015, if bDebugBuildsActuallyUseDebugCRT is set to true and the build configuration is Debug Editor, the build will fail. Full output log fr ...
Behavior Trees cannot be saved if the Blackboard assigned to it was opened before opening the Behavior Tree from the Content Browser
UE - AI - Nov 2, 2015Behavior Trees cannot be saved if the Blackboard assigned to it was opened before opening the Behavior Tree from the Content Browser. Reproduced in 4.8.3 binary, 4.9.2 binary, 4.10 Preview 3 binary ...
Opening Materials and Material Functions with Vertex Interpolator node Results in Crash
UE - Graphics Features - May 23, 2018Per Licensee: Hello, We are migrating our project from 4.18 to 4.19.2 and we are encountering various crashes while opening our material and material functions. I'm adding a simple test case here. ...
Adjusting properties of a Blueprint instance's components in the level does not update references to the properties in the BP's Construction Script
UE - Gameplay - Components - Oct 6, 2015Adjusting properties of a Blueprint instance's components in the level does not update references to the properties in the BP's Construction Script. Note: this would work in 4.8.3. Reproduced in 4. ...