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 ...

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 ...

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 ...

Niagara GPU particles will always have a lifetime of one second if they use a Collision Module

UE - Niagara - May 2, 2019

GPU Particles will always have a lifetime of one second when using a collision module. This is a result of an issue with how off screen timing is handled. GPU particles that are off screen should on ...

Crash on RTX Laptop with ray tracing and -d3ddebug

UE - Graphics Features - Lumen - May 1, 2019

Editor is crashing with d3ddebug in ray tracing Does not occur in dx12 without ray tracing Does not occur on a desktop PC with a 2080 Does not occur without d3ddebug ...

Editor freezes on RTX laptop in DX12 mode

UE - Rendering Architecture - RHI - May 1, 2019

Editor is freezing on RTX laptops with ray tracing Originally reported by Florian Dirmhirn Does not occur in dx12 without ray tracing Does not occur on a desktop PC with a 2080 I have not managed ...

PVehicleDrive not null-ed in UWheeledVehicleMovementComponent::OnDestroyPhysicsState

UE - Simulation - Physics - Apr 30, 2019

PVehicleDrive is not null-ed during OnDestroyPhysicsState, which can lead to crashes during future function calls. ...