Unreal Engine Issues

Queued AnimNotifies skipped on Server via CharacterMovement.

From a licensee: The issue is that under certain edge conditions I am experiencing Anim Notifies not being executed on our Dedicated Server ( it is an off case, so they typically do work, there a ...

Crash when exiting editor before EditorUtilityTask completes

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

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

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

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

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

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

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

Spline points cannot be selected on newly placed spline blueprints

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 ...