Crash when exiting editor before EditorUtilityTask completes

UE - Editor - UI Systems - May 29, 2024

If exiting the editor before the EditorUtilityTask completes, it crashes. It will not crash if canceling the UtilityTask and then exit the editor. The following implementation does not allow destruc ...

Generated world partition maps cause AssetManager warnings

UE - Foundation - Core - Cooker - May 29, 2024

When cooking world partition maps, it automatically writes out several maps in a "Generated" folder below the location of the map in the editor. In the repro above, this will create maps such as /Ga ...

Water body constructor dirties actor

UE - LD & Modeling - Terrain - Water - May 29, 2024

Modify gets called from AWaterBody constructor: WaterSplineMetadata->Reset(3); WaterSplineMetadata->AddPoint(0.0f); WaterSplineMetadata->AddPoint(1.0f); WaterSplineMetadata->AddPoint ...

Shader compilation errors when packaging for iOS after disabling force full precision

UE - Platform - Mobile - May 29, 2024

User report: I want to run iOS shaders with half precision floats as I do on Android. If I disable Force 32 bits Floating Point Precision, there are unfortunately a bunch of shader compilation error ...

UClass::SparseClassDataStruct null at editor-time for child blueprints until compile

UE - Gameplay - Blueprint - May 29, 2024

Child blueprints of a blueprint of a native actor class with sparse data can have an incorrectly null SparseClassDataStruct value, and thus fail to initialzie their SparseClassData. This affects edi ...

Translucent materials with Modulate blend mode disappear with down-res translucency enabled

UE - Graphics Features - May 28, 2024

Reported from this UDN: https://udn.unrealengine.com/s/question/0D5QP00000MLlco0AD/active-dtr-doesnt-render-beforedofmodulated-materials?fromCase=1 The problem is that, except in very specific circ ...

Server will process moves from client with bReplicateMovement set to false

UE - Gameplay - Player Movement - May 28, 2024

UCharacterMovementComponent::ReplicateMoveToServer checks IsReplicatingMovement before sending moves to the server, but the server does not check IsReplicatingMovement when processing these received ...

Packed level actors have wrong transform in cooked builds when created from attached actors

UE - World Creation - Worldbuilding Tools - Level Instances - May 28, 2024

Spline points cannot be selected on newly placed spline blueprints

UE - Editor - Workflow Systems - May 28, 2024

Licensee reports a difference in behaviour in instanced blueprints containing SplineComponents from 5.3 to 5.4, with respect to whether a placed blueprint containing spline component instance can be ...

Editing an array config property via ProjectSettings can end up editing other platform config properties.

UE - Foundation - Core - May 27, 2024

Platforms .ini config files can end up with incorrect data, due to how ProjectSettings manages the config data. On a Windows machine, if we open the ProjectSettings window, all the data is going to ...