Unreal Engine Issues
Unreal Engine Issues
When a client sends an Unreliable RPC to the Server in same frame with a Reliable RPC, Unreliable RPCs are Reliable
UE - Networking - Sep 25, 2018When a client sends an Unreliable RPC to the Server in same frame with a Reliable RPC, Unreliable RPCs are Reliable. It implies extremely high lag on each lost RPC and all following ones. User lose ...
Distro GearVR package crashes on open
UE - Platform - XR - Jun 20, 2019Since this is a shipping/distro build and the device must be unplugged from the machine to be used in the hmd, I am unable to get logging. Will try with developer mode on. The following warning is ...
Debug information is sometimes missing when compiling with cl-clang
UE - Foundation - Cpp Tools - UnrealBuildTool - Aug 24, 2023Via UDN: As has been discussed previously here and in CL 20055361, debug information is sometimes missing when compiling with Clang. We've pinpointed this to debug information not being emitted fo ...
Ensure triggered in FBoundsCacheElement::GetValue when adding ISM instances in Construction Script
UE - AI - Oct 8, 2025An ensure is triggered in FBoundsCacheElement::GetValue when adding instances to an InstancedStaticMeshComponent inside a Blueprint’s Construction Script. This occurs when the ISM component is navig ...
FIntVector has some code that refers to it being two dimensonal
UE - Gameplay - Mar 10, 2016There is code in the FIntVector class (IntVector.h) that seems to be copied from the FIntRect class which is a problem since FIntRect is two dimensonal while FIntVector is three dimensional. The one ...
SpeedTree Material No Longer Compiles With Texture Coordinate Node In BaseColor
UE - Graphics Features - Jan 25, 2017If you open a material with the speedtree node plugged into WPO and then use a texture coordinate(index of 2) in base color the material will no longer compile properly. The full error is "Error [ ...
Unable to locally rotate individual foliage
UE - World Creation - Worldbuilding Tools - Foliage - Jul 14, 2017Unable to locally rotate individual foliage. This seems to have been a limitation of the foliage tool from it's creation. Licensee Description: I would like to ask if there is any way how to preve ...
Assign Event On Destroyed no longer creates Custom Event Node
UE - Gameplay - Blueprint Editor - Oct 9, 2018When creating a new Blueprint Class based on an Actor parent, If you navigate to the Actor's event graph, and right click on the editor blank space; type "Assign on Destroyed" and select "Assign ...
Crash: Unhandled exception UE4Editor_Renderer!FMobileBasePassMeshProcessor::Process
UE - Graphics Features - Mar 14, 2019HUD can cause a crash when used with Mobile. "When running from visual studio exception happens here: https://github.com/EpicGames/UnrealEngine/blob/4.22/Engine/Source/Runtime/Renderer/Private/Mobi ...
Crash when using both tessellation and virtual texture on a landscape material
UE - LD & Modeling - Terrain - Landscape - Feb 11, 2020When a landscape is set up to use runtime virtual texturing. If it uses a material that writes to a runtime virtual texture and has tessellation enabled. Then we see a crash and the log reports: ...