Copying values of an array created through C++ does not copy all values

Tools - Aug 24, 2017

Copying values of an array created through C++ does not copy all values, only the first value is copied over. This is different than an array that is created in blueprints when those are copied they ...

Android app will get crashed if it disable HDR and run with Vulkan API

UE - Platform - Mobile - May 17, 2018

The backtrace is: F/DEBUG   : backtrace: F/DEBUG   :     #00 pc 00070e22  /vendor/lib/hw/vulkan.msm8994.so (A4xCommandBuffer::HwProcessWorkload(QglWorkload*)+585) F/DEBUG   :     #01 pc 0004758d  / ...

255x255 Quads Landscape on mobile is broken

UE - Platform - Mobile - Sep 13, 2019

This issue is reproduced on mobile devices. According to the information from the licensee, it occurs with the following settings.[Link Removed] When executed, the following warning is displayed."L ...

Landscape grass ignores the scale of the parent actors

UE - Graphics Tools - Terrain - Landscape - Nov 11, 2020

DrawScale = Landscape->GetRootComponent()->GetRelativeScale3D(); ↓ DrawScale = Landscape->GetActorScale3D(); Changing as above will solve the problem. Output log displays this warning: LogPhysic ...

[CrashReport]UnrealEditor-Core!FNamedTaskThread::ProcessTasksNamedThread(int,bool) [TaskGraph.cpp:760]

UE - Graphics Features - Feb 13, 2023

Generated from CrashReporter ...

Level Instance: UWorld::BlockTillLevelStreamingCompleted doesn't do recursive Level Instances

UE - World Creation - Worldbuilding Tools - Level Instances - Sep 19, 2023

Sphere Mask ArgInvHardness missing multiplication

UE - Rendering - Architecture - Materials - Jun 27, 2025

Hi Epic, In MaterialExpressions.cpp UMaterialExpressionSphereMask::Compile(), hardness is not calculated the same way in both <if> conditions. One is missing a multiplication by 0.01f. Specificall ...

Crash when using AnimSeqStats console command

OLD - Anim - Apr 8, 2015

Crash when using AnimSeqStats console command. User in the additional info URL seems to know what the code change should be. [Link Removed] ...

Failing to compile will cause blueprint variables to reset to their default values

UE - Gameplay - Blueprint - Jan 18, 2016

If a user creates a variable and sets it to a value that is not the default and then gets an error that prevents the blueprint from compiling, this will cause the variable to be reset to it's defaul ...