Painted Landscapes have blacked out sections when deployed to a mobile device

UE - LD & Modeling - Terrain - Landscape - Mar 24, 2015

If a user uses a multi layered material to pain a landscape and then deploys this project to an iPhone 6 plus our an Android Samsung Galaxy Note3 (SM-N9005) parts of the landscape will appear to be ...

Ensure when opening Camera Anim assets for the second time

Tools - Aug 21, 2016

An occasional ensure is thrown when opening Camera Anim assets. Generally, the issue occurs when opening the asset for a second time, but the repro rate is low, around 1/5. ...

RebuildRenderData is still not safe during cook time

UE - Gameplay - Paper2D - Apr 21, 2015

https://answers.unrealengine.com/questions/215370/some-sprites-tiling-into-tiny-grid-in-packaged-ver.html UTexture2D::ConditionalPostLoad doesn't wait for the render data to finish caching outside ...

[REGRESSION] Export has missing entities, randomly.

UE - Editor - Content Pipeline - Datasmith - Exporters - Nov 9, 2018

Reported by users on the forum (https://forums.unrealengine.com/unreal-engine/unreal-studio/1548249-unreal-studio-beta-4-21-release) I can reproduce locally with sample scene from Revit. Regre ...

Editing the value of an Array Variable in an Actor Component's bp Details panel will collapse the expanded array

UE - Gameplay - Blueprint - Mar 27, 2015

Editing the value of an Array Variable in an Actor Component's bp Details panel will collapse the expanded array. Found in 4.7.3 but also reproducible in Main 2491982. Another user reporting the i ...

Contact Shadow artifacts with ray lengths despite length

UE - Graphics Features - Nov 17, 2016

Contact Shadows have more shadowing errors with lower to mid values than in 4.13 release when the feature was still considered experimental. Even low Contact Shadow Length value is causing issues. ...

Unable to abort Does Path Exist in Behavior Tree

UE - AI - Dec 7, 2017

On the decorator node 'Does path exist" the only option for Observer aborts is None. Based on our documentation for the node it is supposed to also have Self, Lower Priority, and Both as options for ...

Destructible attached with a Physics Constraint ignores Start Awake on play

UE - Simulation - Physics - Destruction - Jul 26, 2016

Destructible attached with a Physics Constraint ignores Start Awake on play The Destructible component is set to simulate physics, but on play physics is not simulated unless the destructible is to ...

Edge Screen Artifacts when calling Widget Blueprints to the Viewport and toggling Fullscreen Mode

UE - Editor - UI Systems - Apr 6, 2016

Widgets called to the Viewport with Fullscreen enabled, will eventually cause artifacts to appear on the edges/borders of the screen. There is currently a forums post with multiple users reporting ...

AIPerception components inherited from a native parent class do not expose the DetectionByAffiliation field on senses for editing in the Blueprint editor's Details view.

UE - Gameplay - Blueprint - Dec 15, 2017

The "Detection by Affiliation" field cannot be edited in the Blueprint editor's Details view for an inherited AIPerception component in the "Senses Config" array if the AIPerception component is inh ...