Unreal Engine Issues
Unreal Engine Issues
Cannot set auto success range to an invalid value in the AIPerception component
UE - AI - May 3, 2019When modifying the value of "Auto Success Range from Last Seen Location" to a value that is not it's default, you can not set it back to its default -1 one value. This was reported and tested in 4 ...
FAnimInstanceProxy::LODLevel isn't initialized, causing UB in PreUpdate
OLD - Anim - Apr 29, 2019FAnimInstanceProxy::LODLevel isn't initialized before it is used in PreUpdate, causing UB on the first call. ...
Dropping a packet containing an initial replication for a Custom Delta Property breaks replication
UE - Networking - May 6, 2019Custom Delta Property NAK handling is done via Custom Delta Base States. Whenever we replicate a CDP, we have the implementing code return a Custom Delta Base State. However, before a CDP is ever re ...
Blueprint Array/Map properties with DefaultToInstanced types are not instanced properly
UE - Gameplay - Blueprint - May 6, 2019At a licensee, I discovered a problem where Blueprint-created array and map properties are not correctly propagating the ContainsInstancedReferenced property flag. This means that if you create a Ma ...
Spawned Actors do not appear in World Outliner
Tools - May 11, 2019Spawning actors from a Blueprint via the SpawnActorFromClass function at runtime does not cause the World Outliner to update. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286), 4.23 (CL - 64 ...
Smart Nav Links created via Load Level Instance are broken, but Simple Nav Links are fine
UE - AI - May 20, 2019Maps brought in via Load Level Instance that contain Nav Link Proxys configured to use the Smart Link instead of the Simple Link end up creating a link at the center of the world instead of their ac ...
iOS fails during build step with OSS Facebook plugin enabled due to spaces in filepath
UE - Platform - Mobile - Feb 8, 2019When a user tries to package or launch onto an iOS device they will fail at the build step due to:[3/8] sh Unzipping: /Users/Shared/Epic Games/UE_4.22/Engine/Source/ThirdParty/Facebook/IOS/FacebookS ...
Remapping morph targets will crash if you have a cloth section
OLD - Anim - May 15, 2019By calling FLODUtilities::SimplifySkeletalMeshLOD on a mesh with cloth sections that is set to remap morph targets, a crash occurs. This seems to be due to the indexing of sections with/without incl ...
Failed to launch project with -D3D10 Command Line Argument
UE - Graphics Features - Jun 3, 2019Adding the d3d10 command line argument to a package project results in a crash. This worked normally in 4.21 and below. ...
GLTF Datasmith Files Import Incorrectly if Mesh Names Contain a "."
UE - Editor - Content Pipeline - Datasmith - Importer - Jun 3, 2019Importing a GTFL through the GLTF Datasmith import references incorrect instance meshes when their names contain a period. Which is very common when exporting from Blender which automatically adds t ...