Unreal Engine Issues
Unreal Engine Issues
Soft References resolved at Runtime result in References to Persistent Assets
UE - Gameplay - Aug 23, 2018It is believed that soft references resolved during runtime, point to the edit time instances of actors instead of the runtime instances. This issue does not reproduce when it is called from an Inp ...
Behavior Tree has missing Service Nodes on project load
UE - AI - Dec 4, 2018In the project is Behavior Tree that implements some tasks, decorators and services, but for some reason, two of my tasks nodes gets initialized with all the pointers to their services set to null, ...
Compile error when Blueprint Interface returns a map type variable
UE - Gameplay - Blueprint - Feb 26, 2019A Blueprint Interface function that returns a map type variable will fail compiling with various errors when called in another Blueprint. If the same function is setup in the Actor Blueprint instead ...
Crash When Building Lighting for a Level with Previously Purged Lightmaps
UE - Graphics Features - Feb 27, 2019If you go into World settings, select Force No Precomputed Lighting, rebuild lighting to purge lightmaps, uncheck Force No Precomputed Lighting, save level, quit, reload project and try rebuilding l ...
Certain combined Linear/Angular movements cause Client to freeze for several seconds
UE - Simulation - Physics - May 24, 2019When using Replicated Movement, certain combined linear/angular movements cause the client to freeze for several seconds and then catch up to the server. This is a regression from 4.21.2 (CL-4753647 ...
Client Build Errors with VS 2019
UE - Simulation - Physics - Nov 11, 2019When building UE 4.23 from source using VS 2019, there are compile errors when building the Targets DebugGame Client and Development Client. Note that Debug Client builds successfully. The errors ar ...
Action Rpg Sample Creating a new GameplayCue handler crashes the editor in 4.24
UE - Gameplay - Dec 17, 2019In Action Rpg sample, creating a new Blueprint of type GameplayCueNotifyActor or GameplayCueNotifyStatic, results in an Engine crash. The call stack leads to a PrintF Slate warning message that woul ...
There is no obvious way to disable Auto Exposure in a post process volume
UE - Graphics Features - Jan 31, 2022There is no easy way to disable auto-exposure on a per-component basis. This is a big source of confusion for people new to Unreal. The work around is to set Min and Max Brightness to 1 or set to ...
Imported Texture shows up black in Content Browser
UE - Texture - May 13, 2022I'm trying to import a .exr texture created in Substance Painter and exported as a 32 bit linear exr file. The texture is to be used for roughness. However, I've stumbled upon the problem that users ...
Trace to complex collision returns incorrect PhysicalMaterial
UE - Simulation - Physics - Dec 15, 2022In ConvertQueryImpactHitImp, MaterialIndex is looked up from InternalFaceIndex, but FTriangleMeshImplicitObject:: MaterialIndices is an array by ExternalFaceIndex, so it returns incorrect material i ...