Materials with Subsurface Profile not affected by Opacity value

UE - Graphics Features - Oct 24, 2017

A material with Shading Model set to Subsurface Profile is no longer affected by Opacity value in 4.17, 4.18, and 4.19 (Main) but was previously working as intended in 4.16. This is a regression. ...

When Allow Sequencer Edits Only is Enabled Some Properties Do Not Revert to Original Values

UE - Anim - Sequencer - Oct 23, 2017

Certain values for the PostProcessVolume do not revert back to original values after tracks are deleted from sequencer when in Allow Sequencer Edits Only mode ...

Monitor content override the "Map Directory To" option if the source directory start with a mount point

Tools - Oct 23, 2017

If there is a valid specified "Map Directory To" we should use it instead of overriding it with the source folder mount point. ...

Lighting Channels Do Not Function with 78+ Lights on Actor

UE - Graphics Features - 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. ...

Using the HighRes Screenshot command in a shipping packaged build crashes the game

Tools - Oct 20, 2017

Using the HighRes Screenshot command in a shipping packaged build crashes the game. This issue does not display a callstack or the crash reporter, simply a message that says fatal error then closes ...

Engine Crashes When SubAnimInstance is set up and Master Sequence is Set to Spawnable

OLD - Anim - Oct 20, 2017

Engine crashes when CharacterBP is dragged into the Shots track and Spawnable is checked and unchecked when character animation Blueprint has a SubAnimInstance set up. ...

Inherited TMap value of type UObject* is not saved on blueprint compile

UE - Gameplay - Blueprint - Oct 20, 2017

When a blueprint inherits a TMap variable with a UObject* as the value, compiling the blueprint causes anything set for the value to rest to "none" Workaround: Adding the TMap through the editor re ...

Crash when modifying InstancedStaticMesh transform in Blueprint Editor

UE - World Creation - Worldbuilding Tools - Foliage - Oct 20, 2017

InstancedStaticMesh component element mismatch between in-level and BP editor can cause crash when modifying transform in BP editor. This can happen when a user modified transform in-level actor's I ...

Hot reload iteration time regression.

UE - Foundation - Core - Oct 19, 2017

Hot reload iteration times have been crippled ever since CL# 3332960, which was a fix for [Link Removed]. ...

[CrashReport] UE4Editor_UMG!UWidget::GetParent() [widget.cpp:610]

UE - Editor - UI Systems - Oct 19, 2017

This is a trending crash coming out of the 4.18 previews and 4.18.0. Users have not provided any descriptions of their actions when the crash occurred. Source Context 597 void UWidget::SetA ...