Landscape Grass Tool loss of Performance

Tools - Foliage - Mar 20, 2017

A number of users are reporting a large drop in performance when working with the landscape grass tool compared to other foliage application methods, as well as a drop in performance since previous ...

UMG Background Blur renders black on Android

Mobile - Dec 8, 2016

Tested on Nexus 6P with Android 7.0 Suggest that on mobile the background is not rendered in real time, instead we render the blurred image for one frame and use that same image for subsequent fr ...

Nested Spline Components cannot be edited

Tools - Mar 14, 2017

When a spline component is created in a class/blueprint (child) that is used as a component for another class/blueprint (parent), the spline component cannot be edited from the parent class instance ...

Ensure occurs when turning on Vector Fields Developer Flag

Rendering - Jan 11, 2017

The editor crashes with an ensure in the output log when Vector Field flag is toggled on in the show options of the viewport. LogOutputDevice:Error: === Handled ensure: === LogOutputDevice:Error: E ...

Hot reload does not update Enum entries

Gameplay - Blueprint - Oct 13, 2015

Performing a hot reload after updating an Enum will not reflect the update until the editor is closed/reopened. UPDATE (8/23/17): Restarting the editor dose not immediately update the enum. When ...

Ensure When Setting Simulate Physics of a Child Actor on the Server and Forcing NetUpdate

Networking - Jan 5, 2017

An ensure is being triggered when you set simulate physics on a child actor on the server and then force net update. Found in 4.14.2 CL# 3241561. Reproduced in 4.16 Main CL#3247538 ...

Hierarchical Instance Static Mesh's array does not reorder itself correctly

Rendering - Jan 16, 2017

When an instance is removed from a Hierarchical Instanced Static Mesh's array, if there are indices that are further along in the array that fill that index, the last index in the array is used to d ...

Packaging With Nativize Blueprints Enabled Disabling AI Perception

Gameplay - Blueprint Runtime - Feb 24, 2017

Packaging a game with nativize blueprints enabled is preventing AI Perception from working. This has also been tested in a clean project where the AI Character would no longer be triggering its OnPe ...

[CrashReport] FSlateRHIRenderer::ConditionalResizeViewport()

Tools - Jul 27, 2017

This is a common crash occurring on Windows and Mac in 4.15 and 4.16 (two different callstacks with close similarities). The callstack is also similar to UE-45649 and may be related. User Descrip ...

Crash when using Mesh Reduction on ScotsPine_01 for LOD3

Rendering - Jan 30, 2017

A crash occurs when trying to use the Mesh Reduction tool for the ScotsPine_01 static mesh from the Open World Demo collection. The assets from this project are usually very processor heavy due to ...