Unreal Engine Issues

Moving assets in the Editor fails to fixup references causing the project to generate errors

Moving assets in the Editor is very unreliable. References may or may not be fixed up. No direct error is presented or a warning about problems. Any moves of the gameinstance, string table or certai ...

Engine Crashing with AMD R9 2 and 3 Series Cards

Multiple users are reporting crashes in the Engine when using an AMD R9 380 and 390 series cards. There was a request to have these cards added to compat lab for testing, but have not heard any upd ...

Code review for potential fix for crash where Velocity contains NaN

User crashed in the function "void UCharacterMovementComponent::PerformMovement(float DeltaSeconds)" due to a Velocity containing NaN. AnswerHub post details function calls that lead to where the N ...

Investigate/fix navmesh tiles disappearing randomly when level stream in.

See UDN description: https://udn.unrealengine.com/questions/554749/bug-navmesh-streaming-and-tile-corruption.html ...

Shadow doesn't update for a moving nanite mesh (fixed in 5.4)

When a nanite mesh moves, the shadow does not. ...

Fix sampling frame rate not properly setup for dynamic montages

Matinee movie recording is broken in 4.10

When trying to record a movie from a matinee in 4.10, it can fail for a number of reasons: 1. The folder does not exist 2. The cinematic view modes do not take effect 3. Trying to record a streamin ...

Project cannot build in VS 2017 15.8+ if it uses std::make_shared with an over-aligned type

Visual Studio 2017 15.8 includes a fix to properly handle std::make_shared used with over-aligned types. However, this is a breaking fix and requires the definition of one of two macros to either ac ...

Updating C++ projects with Marketplace plugins in 4.25.2 fails to build project

Projects created in previous engine versions fail to build in 4.25.2Running D:/Epic Games/UE_4.25/Engine/Binaries/DotNET/UnrealBuildTool.exe Development Win64 -Project="D:/Unreal Projects/MyProject4 ...

Garbage Collection Causes Lag in MAC Project

User reports lag regardless of the Garbage Collection settings, EXCEPT: If the user changes settings to 3 then lag becomes more frequent (approximately every 3 seconds verses every 5 seconds.) *Wa ...