Blueprint Array/Map properties with DefaultToInstanced types are not instanced properly

Gameplay - Blueprint - May 6, 2019

At a licensee, I discovered a problem where Blueprint-created array and map properties are not correctly propagating the ContainsInstancedReferenced property flag. This means that if you create a Ma ...

Fill Data Table from CSV File crashes editor if the data table is open

Tools - May 6, 2019

Attempting to use the Fill Data Table from CSV File node will result in a crash if the CSV file is open when running. ...

Trigger Montage Ended Event results in Unhanded Exception

Anim - Animation - May 6, 2019

TriggerMontageEndedEvent is calling RemoveAtSwap after the NotifyEnd callback which is not safe if the ActiveAninNotifyState array is modified by the callback. WorkAround:   Add a Delay node befo ...

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

Gameplay - 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

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 ...

Load times for the editor appear to have increased

Rendering - 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) ...

Decals not captured in environment reflections

Rendering - Features Teams - May 2, 2019

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

PVehicleDrive not null-ed in UWheeledVehicleMovementComponent::OnDestroyPhysicsState

Physics - Apr 30, 2019

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

Controller Input fires in both packaged build and editor at the same time

Tools - Slate - Apr 30, 2019

Editor still receives input if a packaged game is being run on the same machine. ...

Assertion failed after closing project on Oculus Mobile - Referencing AudioMixerSourceManager.cpp:300

Audio - Apr 30, 2019

This assertion seems to occur when closing the project while a sound is playing on the device. Assertion failed: CommandBuffers[NextIndex].SourceCommandQueue.Num() == 0 [File:D:/P4Workspaces/Switch ...