Importing specific Alembic geometry cache fails

UE - Editor - Content Pipeline - Import and Export - Oct 3, 2018

According to Licensee this problem seems to be caused by the time to sample the data. By changing the time to frame number, the import seems to be successful. \Engine\Plugins\Experimental\AlembicI ...

Setting a component to replicate in an Actor that is already set to replicate alters the location of the mesh on the Client after enabling physics

UE - Networking - Jan 27, 2016

Setting a component to replicate in an Actor that is already set to replicate alters the location on the Client after enabling physics. Note this only appears to occur with components added in Const ...

Ray Traced Distance Field on OpenGL not working

UE - Graphics Features - Dec 1, 2015

Are Ray Ttraced Distance Field Soft Shadows supported on OpenGL ES3.1 + Android Extension Pack platforms like the Shield Tablet or Shield Console? Since the ES3.1+AEP platform supports deferred ren ...

Stationary/Movable Lights render based on distance from World Origin in Orthographic Camera View

UE - Graphics Features - May 20, 2016

When using the Orthographic Camera view (such as that used with the Paper2D Template) any lights that are distant from the world origin will start to fade out as if they are being culled. The distan ...

Unexpected behavior from moving multiple widget components with render transform

UE - Editor - UI Systems - May 10, 2017

Unexpected behavior occurs from moving multiple widget components with render transform applied to them. The individual components seem to change relative position or rotation when being clicked and ...

Unable to select foliage by left clicking after 1.5 k foliage meshes placed

UE - World Creation - Worldbuilding Tools - Foliage - Aug 28, 2017

When using the foliage tool, once the mesh count reaches around 1.5k and higher you will be unable to select individual meshes by using the mouse. The lasso tool and the select all tool work as inte ...

[CrashReport] UE4Editor_GraphEditor!SGraphPin::GetTooltipText() [sgraphpin.cpp:1100]

UE - Editor - UI Systems - Slate - Sep 7, 2017

This is a common crash that has affected over 60 users since at least 4.16 User DescriptionsDeleted a SET variable Source Context 1091 FText SGraphPin::GetTooltipText() const 1092 { ...

Possession is not replicated properly to some clients

UE - Networking - Nov 8, 2018

A user has reported an issue where Possession replication or Character Movement replication, unsure of which, is not working properly for some clients. It seems to work fine for the first client but ...

NormalizePackageNames() should interpret 'exclude developer folders' to also exclude packages in ExternalActors and ExternalObjects

UE - CoreTech - Oct 14, 2022

In NormalizePackageNames() (PackageUtilities.cpp), there is a PackageFilter parameter, which can be set to exclude developer packages (NORMALIZE_ExcludeDeveloperPackages). The code only checks the b ...

Landscape Textures Patches issue when using "Texture Backed Render Target" as the Height Patch Source Mode where Landscape patches are not applying properly the first time a level is opened after restart

UE - Graphics Tools - Terrain - Landscape - Oct 6, 2025

Context: Landscape patches are components that can be attached to meshes to affect the landscape as the mesh is repositioned. Problem: The problem is that when using "Texture Backed Render Target" ...