Unreal Engine Issues
Unreal Engine Issues
UObject Macro Libraries cannot use functions that require a WorldContext
UE - Gameplay - Blueprint Editor - Jan 11, 2024If you make a Blueprint Macro Library that derives from UObject you are then unable to use any functions that require a WorldContext, like Delay. This is because the WorldContext cannot be assumed l ...
Mouse lock on a widget in the RetainerBox is misaligned and locked in the wrong position in the standalone/package application
UE - Editor - UI Systems - UMG - Jan 9, 2024Locking the mouse to a widget covered by a Retainerbox locks it in a different position in the standalone/packaging application than in PIE. This does not happen if RetainerBox is disabled and the ...
NiagaraEmitter is saved with the different asset name when renaming with speceficed name
UE - Niagara - Jan 9, 2024Renaming a NiagaraEmitter to a specific asset name changes it to an unspecified asset name. This happens only with NiagaraEmitter, not with other assets. ...
Setting GDelayTrimMemoryDuringMapLoadMode = 2 causes crash on same map reload
UE - Gameplay - Jan 8, 2024GDelayTrimMemoryDuringMapLoadMode is a CVar that controls whether a garbage collection should take place during map change after unloading the previous map and before loading the new one. By default ...
Bug when trying to Ctrl+Z after Replace Actors
UE - Editor - Workflow Systems - Dec 22, 2023From the UDN case #00649142: My team noticed a bug where sometimes when using "Undo" (Ctrl+Z usually) the BP they are working on disappears in the level. We were able to find a 100% repro case when ...
Blueprints from UE4 with dangling delegate reroute node crashes on UE5 load
UE - Gameplay - Blueprint Compiler - Dec 22, 2023If a project from UE 4.27 or earlier has a blueprint with a reroute node dangling (no outgoing connection) from a Custom Event Node's delegate pin (red), this blueprint will crash when loaded in UE ...
FColorSpaceTransform Crash on Linux due to misalignment
UE - Virtual Production - Rendering - Color - Dec 15, 2023FLinearColor FColorSpaceTransform::Apply(const FLinearColor& Color) crashes while attempting to VectorLoadAligned() when running the UnrealEditor on Ubuntu 22.04. ...
Gameplay Ability Component Montage Replication incorrectly handles cyclic animation sections
UE - Gameplay - Gameplay Ability System - Dec 4, 2023In AbilitySystemComponent_Abilities.cpp, the check for the client being on a different section on line 3059 checks that the RepNextSectionID is not the current section. One would assume this is beca ...
Delayed movement adjustment can include incorrect movement mode
UE - Gameplay - Player Movement - Nov 27, 2023It's possible for the server to send a client's character a movement correction with the wrong movement mode. This can occur if a project has client adjustment throttling settings enabled: Networ ...
Single sided complex collision mesh collision blocks character movement from backside
UE - Simulation - Physics - Query - Nov 17, 2023Commenting out the branch in FTriangleMeshSweepVisitor::VisitSweep is a work-around.if (CullsBackFaceSweepsCode != 0) { if (VectorMaskBits(IsBackFace)) { // Don't cull the back face ...