NavMesh does not build correctly to SkeletalMesh collision

UE - AI - Mar 16, 2015

NevMesh cuts out holes for collision incorrectly with Skeletal Meshes. Skeletal Meshes with "Can Ever Affect Navigation" set to true and that have a Physics Asset are capable of causing this. ...

Specifying a custom UMovementComponent class via SetDefaultSubobjectClass() does not seem to serialize default value edits correctly on the CDO.

UE - Foundation - Core - Oct 28, 2015

Possibly some sort of issue related to SetDefaultSubobjectClass() rather than UMovementComponent specifically. I was able to reproduce in 4.10 release branch and in //UE4/Main with the test project ...

Reduced Tessellation at edge when using world displacement

UE - Graphics Features - Jan 11, 2016

Adding a material to a mesh that is affected by world position offset has reduced tessellation around the meshes edges. This is seen when viewed in wireframe and is influenced based off of the angle ...

meta specifier ArrayClamp does not work with array in struct

UE - Gameplay - Blueprint - Sep 14, 2016

Giving an int32 variable the specific ArrayClamp has no affect when the specified array is defined inside a USTRUCT(). Variable is able to be set to a value outside of specified struct's range. ...

Toggling game view does not hide icons/assets in viewports outside of perspective view

Tools - May 2, 2016

Toggling game view does not hide icons/assets in viewports outside of perspective view that would not be visible in game mode. Regression (No) issue (does) occur in 4.10.4 ...

Animgraph-Blend node-Alpha Scale Bias-larger values imprecise

OLD - Anim - Jan 21, 2015

When setting the alpha scale bias for a blend node in the AnimGraph, if you set the values so that the difference is greater than 10, the values will not enter as whole numbers (see image.) ...

Opening Sequencer from "Window" toolbar option opens an empty window

UE - Anim - Sequencer - Apr 1, 2016

After enabling the Sequencer plugin, opening Sequencer from the Window toolbar option brings up an empty window that cannot be interacted with. Is this a regression: No - Issue occurred in 4.10.4 a ...

Can't undo blueprint/material movement done by arrow keys

UE - Gameplay - Blueprint - Feb 8, 2017

When moving nodes in materials and blueprints using the undo option doesn't undo the movements made by the arrow keys. This issue affects anything that uses nodes on an event graph. ...

Crash launching ARSampe onto iOS

UE - Platform - XR - Jul 27, 2017

ARSample from WWDC is crashing when attempting to launch onto an iOS device Originally hit this on an iOS 11 iPad, but it also reproduced on an iOS 10 iPhone 6+ ...

OnUrlChanged does not fire on mobile

UE - Platform - Mobile - Sep 28, 2017

When using On Url Changed event on mobile devices, the event does not appear to fire as expected. Tested on iphone 5 As a note: The function GetUrl appears to be similarly affected. ...