Level LODIndex can get stuck in a bad state

UE - World Creation - Worldbuilding Tools - World Composition - May 3, 2019

If Level LOD changes to a different LOD while first is loading, LODIndex breaks. ...

Cannot set auto success range to an invalid value in the AIPerception component

UE - AI - May 3, 2019

When modifying the value of "Auto Success Range from Last Seen Location" to a value that is not it's default, you can not set it back to its default -1 one value. This was reported and tested in 4 ...

ES3.1 preview causes temporary freezing when selecting objects in the viewport on Mac

Tools - May 3, 2019

The editor will freeze for seconds at a time when selecting between objects in the viewport after using ES3.1 preview on a Mac. ...

TrackFieldData and SubSectionFieldData structs not properly being serialized during cook in the Precompiled Evaluation Template

UE - Anim - Sequencer - May 3, 2019

During compile on the fly if the evaluation field is invalidated SubSectionField data will not have been properly serialized and the meta data will not be populated correctly, as the custom serializ ...

Add Runtime Candidate Image does not produce a valid ARCandidate image on Android

UE - Platform - XR - May 3, 2019

Add Runtime Candidate image does not appear to create an AR Candidate image when being used on Android. ...

Soft Object Pointers may not fire Rep Notifies

UE - Networking - May 3, 2019

User reported that Soft Object Pointers may not fire RepNotifies properly. This is likely also the case with Weak Object Pointers (and other similar wrappers). The main problem is that these all ge ...

Load times for the editor appear to have increased

UE - Graphics Features - May 3, 2019

The editor appears to have longer load time as compared to an older engine version (4.20.3 loaded in seconds while newer version appear to load the same project in over a minute) ...

The ConstructionScript not being called on drag

Tools - May 2, 2019

The construction script for a custom actor blueprint does not execute after drag when the scene component is selected. Tested in 4.21.2 (CL - 5660361), 4.22.1 (CL - 6063286), 4.23 (CL - 6248266) ...

Decals not captured in environment reflections

UE - Graphics Features - May 2, 2019

Decals are not being captured by environment reflections. Last working in 4.20.3 ...

UHT always runs when building a code project using a binary Engine installation even if no code change has been made

UE - Foundation - Cpp Tools - UnrealHeaderTool - May 2, 2019

When building a code project that was created with the binary Engine installed through the Launcher, UHT always runs even if no code changes have been made. This only occurs with a binary Engine ins ...