Cannot run any packaged project if "Force all skinned meshes to recompute tangents" has been enabled in an unrelated project

UE - Foundation - Core - Apr 20, 2018

Enabling the "Force all skinned meshes to recompute tangents" sets the value at a Windows user level so that it affects all UE4 projects opened by that user, including unrelated packaged projects. T ...

Crash on exit PIE after editing character blueprint of a code based side scrollers

UE - Gameplay - Apr 4, 2016

After editing character blueprint of a code based side scroller project, starting PIE will show the camera detached from the character and exiting PIE causes the project to crash. NOTE: This appear ...

Ensure starting PIE after editing character blueprint of a code based side scrollers

UE - Gameplay - Apr 6, 2016

After editing character blueprint of a code based side scroller project, starting PIE will show the camera detached from the character and exiting PIE causes the project to crash. NOTE: This appear ...

Unnecessary files in Perforce Depot

Several unnecessary files seem to have found their way into the Perforce depot and need to be cleaned up. Affected files:Engine/Documentation/Source/Engine/Matinee/HowTo/MHT_3/Images/MHT#_Drag_In_C ...

Foliage experiences odd culling when world origin is changed

UE - Graphics Features - Sep 13, 2017

There is an odd issue occurring when the world origin is changed, changing the world origin causes the foliage to cull in unexpectred ways. The issue can be solved by using the console command "r.Al ...

[CrashReport] UE4Editor_Foliage!AInstancedFoliageActor::PreEditUndo() [instancedfoliage.cpp:2296]

UE - World Creation - Worldbuilding Tools - Foliage - Dec 1, 2017

This is a common 4.18 crash. Users have not provided any description of their actions when the crash occurred. Source Context 2286 void AInstancedFoliageActor::PreEditUndo() 2287 { ...

Buffer Visualization Modes Are Inaccurate

UE - Graphics Features - Apr 19, 2018

In 4.18, Buffer Visualization Modes appear very similar to their representation in Buffer Overview. In 4.19 and Main (CL 4008322) the results are very blown out. Similar issue reported in [Link Remo ...

Complex collision mesh might lose its collision in the editor

UE - LD & Modeling - Modeling Tools - Mesh Editing - Feb 18, 2020

This is affected by loading order. In the case, display mesh was loaded firstly and try to build collision mesh form complex collision mesh asset. But the collision mesh didn't finished to make Ren ...

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 ...

Stationary Directional Lights not Rendering Dynamic Shadows on Mobile

UE - Platform - Mobile - Jan 21, 2016

As the title suggests, dynamic shadows on mobile when using a stationary directional light are not appearing at all when deployed to the device or when viewed in the mobile previewer. The odd part ...