UMG Event Track events may not fire if they are too close to the end of the animation

Anim - Sequencer - Nov 17, 2016

Every tick, we evaluate the range of time that has passed to see if any events on the event track need to be fired. However, when we hit the end of a loop, we have to manually set our LastPosition b ...

Web browser widget causes app to crash when packaging for Distribution on Android

Platform - Mobile - Dec 7, 2016

Web browser widget causes app to crash when packaging for Distribution on Android. The web page is not pulled up and the app crashes ...

[CrashReport] UE4Editor_Core!FName::GetDisplayNameEntry() [unrealnames.cpp:894]

UE - Rendering - Materials/Shaders - Sep 14, 2017

This is a somewhat common crash in 4.17.1. This same callstack appeared a few times during 4.11, but then has not been seen until recently. Users have not provided any descriptions of their action ...

Lighting Channels Do Not Function with 78+ Lights on Actor

Rendering - Oct 20, 2017

Lighting channels do not function when the number of lights affecting actors is 79 or higher. Any number of lights that is 78 or fewer will honor lighting channel assignments. ...

Landscape Change Component Size Tool removes foliage from landscape

Tools - Foliage - Dec 12, 2017

Foliage painted onto a landscape will disappear when Sections per Component is changed from 1x1 to 2x2. Affects 4.17.2 CL 3658906, 4.18.2 CL 3794801, 4.19 Main Possible Workaround is to set the Re ...

Incorrect path for folders in Xcode results in their names being displayed in red instead of black

Platform - Mac - Feb 11, 2018

The full path for some folders in a Xcode includes `Intermediate/ProjectFiles/`. This is incorrect, since that path does not exist, and results in the folder names being displayed with red text. Rem ...

ChildActorComponent (SkeletalMesh) goes into tpose when calling SetChildActorClass

Anim - Mar 19, 2018

There is an issue occurring where when updating an animation of a child actor by setting the Child actor class, the animation will flash the skeleton in a T-Pose before continuing with the animation ...

Landscape Disappears from Scene After Being Added to Sequence

Anim - Sequencer - Mar 21, 2018

Landscape disappears from scene if added to a sequence, selected in scene, and the one of the tracks in sequencer(not the landscape that has been added) is selected again Landscape was added to t ...

Editor will crash while instancing nested AIPerception component template subobjects in an AIController-based Blueprint class during compile-on-load.

Gameplay - Blueprint - Mar 23, 2018

User report of an assertion that fires on editor reload during an attempt to reload an AIController-based Blueprint class with a dependency on a child Blueprint class, both created in a previous edi ...

Widget retains reference for widgets that have been replaced and deleted

Tools - UMG - Mar 29, 2018

Widget references remain even after the referenced widgets have been deleted. This happens if the widget was replaced with another user created widget. ...