Unreal Engine Issues
Unreal Engine Issues
Cannot set array elements from an array that is contained within a struct
UE - Gameplay - Blueprint - Aug 26, 2015Cannot set array elements from an array that is contained within a struct User Description: Setup: Array of structures "StructureA". In StructureA, array of integers/strings/whatever. Result: Can' ...
Fresnel material doesn't display properly in content browser and sometimes weird in material viewport
UE - Rendering - Architecture - Materials - Aug 4, 2015When a material is created and saved using the fresnel node, the fresnel effect does not show in the Content Browser thumbnail. Also, when editing the material, zooming in and out with the mouse wh ...
Static Mesh imported from USD file has empty UV channel
UE - Editor - Content Pipeline - Import and Export - Oct 6, 2020When importing static mesh from USD file then it has the wrong amount of UV channels. Selecting a UV channel shows an empty area in the viewport. Regression: YES - not reproduced in 4.25.3 produc ...
"Allow Custom Depth Writes" Creates Artifacts In Depth Buffer
UE - Graphics Features - Jan 5, 2017When a transparent material has "Allow Custom Depth Writes" enabled it is prone to have artifacts in the custom depth buffer under specific conditions. The conditions are as follows:The translucent ...
PIE with Auto Recompile Blueprints disabled generates an error message asking to compile PROTO_BP Blueprints
UE - Gameplay - Blueprint - Mar 17, 2015PIE with Auto Recompile Blueprints disabled generates an error message asking to compile PROTO_BP_Blueprint_0 and PROTO_BP_AnimBlueprint_0. Clicking Yes compiles, but any attempt to PIE thereafter g ...
Suspend/resume iOS Metal Crash on low end device with MTLCommandBufferErrorMemoryless error with lots of geometry
UE - Platform - Mobile - May 11, 2023The project was built in Unreal 4.27.2 binary from the Epic Games Launcher. At this stage we have only observed the crash on devices with a hardware combination of Apple A9 1.8 GHz and 2GB of Memory ...
Anim Graph will hang if the Draw Debug Sphere and Set node are connected and compiled
UE - Anim - Runtime - Anim Blueprints - Jun 8, 2023anim blueprint hangs when compiled. Probably a cyclic issue when compiling. A workaround is to add a delay of any time between the set node and the Draw Debug Sphere node. Repros in the following v ...
Animation curves on Montages are not remapped when using a 'Compatible' skeleton
UE - Anim - Runtime - Jun 27, 2023[Link Removed] From UDN: If you are using the new compatible skeletons feature and you have a Montage with an attribute curve on it, the curve is not correctly mapped to the target skeleton. So ...
Vector Parameter Values do not show values with material instances
UE - Graphics Features - Jan 22, 2018There is an issue where Vector Parameter Values do not show values with material instances. There is a workaround to get the parameter to appear as intended but setting the specific parameters using ...
UDN: ChildBP - When replacing Static or SkelMesh Compoent inherited from the Parent Class, Socket list doesn't update
UE - Gameplay - Blueprint - May 21, 2015This is simple, but maybe hard to explain, so hear with me. I've attached a sample project and Repro Steps below in case it's not clear. Basically: 1. Make BP_Parent with an unassigned Mesh (Stati ...