Foliage Lightmaps Are Incorrect When Using a Precomputed Lighting Scenario

UE - Graphics Features - Oct 2, 2018

Foliage lightmaps will not match properly to the lighting when using a lighting scenario. They will look normal if you select the Foliage tool but in PIE they will still be incorrect. Working as ex ...

Calling LoadLevel within OnLevelShown delegates causes an array modification during range-for iteration assertion

UE - Gameplay - Oct 8, 2018

Ranged-Based for in ULevelStreaming::BroadcastLevelVisibleStatus iterates an array which can become modified during execution if new levels are added. ---------------------------------------------- ...

EarlyZPassOnlyMateriaMasking Makes Masked Materials on Particles Flicker When Close to the Camera

UE - Niagara - Oct 12, 2018

When "r.EarlyZPassOnlyMaskedMaterials" is enabled, masked materials used with particles will flicker when close to the camera. Found in 4.17 CL# 3658906, 4.18 CL# 3832480, 4.19 CL 4033788, 4.20 CL# ...

Inconsistent Blueprint Instance Physics/Collision edit-ability

UE - Simulation - Core - Oct 9, 2018

For Blueprints with components having collision, the collision profile set in the blueprint seems to determine the edit-ability of many collision/physics properties of the instances. The profiles ef ...

Editable text box caret blinks slowly when manually setting focus

UE - Editor - UI Systems - Oct 18, 2018

For some reason, it appears that manually setting the focus (whether it be user, keyboard, or both) on an editable text box in UMG causes the caret to blink slowly. However if you were to manually s ...

SCheckBox::SetIsChecked does not broadcast OnCheckStateChanged

UE - Editor - UI Systems - Slate - Oct 29, 2018

The implementation for SCheckBox::SetIsChecked simply sets IsCheckboxChecked without checking to see if the passed in value is different and does not trigger OnCheckStateChanged. ...

Getattachedactors does not return the proper value when called from the Constructor

UE - Gameplay - Nov 7, 2018

A user has reported that using GetAttachedActors in the Constructor does not work properly. If actors are attached in the editor, the function does not return the correct value when called in the Co ...

Data table editor uses property names as column headings

Tools - Nov 2, 2018

The column names in the data table editor appear to directly use the property name instead of the "pretty" version of the property name. If the "DisplayName" meta specifier is used, though, that is ...

bPersistentLines is not respected by DrawDebugLine

UE - Graphics Features - Nov 1, 2018

It looks like the line's lifetime is forced to the default line lifetime of one second if the provided lifetime is less than zero, which would be the case if calling the function with just enough pa ...

Copy+Paste with custom widget seems to "break link" with default values

UE - Editor - UI Systems - Nov 8, 2018

It should be noted that this issue does not occur if you were to create a new "test widget" (by dragging it from the widget list) every time instead of copying and pasting an existing widget. The i ...