Infinite Loop When Generating HLOD Clusters

UE - World Creation - Worldbuilding Tools - HLOD - Aug 8, 2018

The HLOD system gets stuck in a infinite loop when building.  Comment from the user: ++I've tracked it down to this code: const AActor* UHLODProxy::FindFirstActor(const ALODActor* LODActor) { a ...

TMap does not serialize properly in specific circumstance when it contains a UObject property set to null by default

UE - Foundation - Core - Aug 8, 2018

A TMap containing a struct with a UObject reference property (set to nullptr by default) does not serialize properly for an instance where the UObject reference is set on the instance, but the TMap ...

Vertex Interpolate Node Doesn't Work with Lightmass

UE - Graphics Features - Lumen - Aug 8, 2018

The vertex interpolate node doesn't work with lightmass. Found in 4.19 CL# 4033788, 4.20 CL# 4233996, and 4.21 CL# 4258917 ...

MeshEditor Crashes When Tool is Selected

Tools - Aug 8, 2018

MeshEditor Crashes When Tool is Selected. Found in 4.20 CL# 4233996 and 4.21 CL# 4258917 ...

Finish or Custom Event Tracks in a Timeline don't execute when 'Set New Time' is being used

UE - Gameplay - Aug 8, 2018

When using Finish or Custom Event Tracks in a Timeline, they won't execute when 'Set New Time' is being used with another Timeline or Float value. This issue was reported and tested in 4.19.2 (CL ...

Child Actors do not replicate to clients when running project with "-game" command

UE - Networking - Aug 7, 2018

Child Actors do not replicated properly to clients when running a project using the "-game" commandline argument. This does functionality does work properly in PIE and in a cooked build however. Re ...

IOS binaries are not included when a plugin is packaged for IOS using a binary Engine installation

UE - Foundation - Cpp Tools - UnrealBuildTool - Aug 7, 2018

Packaging a plugin for the IOS platform on a Mac completes successfully, but there are no IOS binaries included in the packaged plugin. Once the package process completes, the packaged plugin only c ...

Using a Sub Anim Instance causes a "Sub Instance Loop" Compile Error

OLD - Anim - Aug 7, 2018

Using a Sub Anim Instance causes a sub instance loop error when referencing another Animation Blueprint. This is a regression from 4.19.2 (CL-4033788) as it complied without error. This issue was r ...

Actor Component Replication Not Working on Dynamically Spawned Components in Blueprint

UE - Networking - Aug 7, 2018

Actor components that are spawned dynamically through Blueprint are not being properly replicated to the client.  Found in 4.20 CL# 4233996 and reproduced in 4.21 Main CL# 4258917 Unable to test i ...

Ensure when pasting copied nodes into an Object

UE - Gameplay - Aug 7, 2018

When copy and pasting nodes from an Actor Blueprint to an Object Blueprint the Editor stalls for a bit and an ensure occurs. This issue was reported and tested in 4.19.2 (CL-4033788). This issue ...