Void Interface functions cannot be overridden in Blueprints

UE - Gameplay - Blueprint - Feb 10, 2015

A Blueprint Interface function that does not have an Output cannot be overridden in a Blueprint implementing that function. The function does not appear in the Interface section of the My Blueprint ...

iOS will not package or launch on Win 10 machine

UE - Platform - Mobile - Sep 23, 2015

Launching or packaging for iOS does not work on our Windows 10 machine however we are able to package and launch onto iOS devices from Windows 7 machines. Using the File > Package > iOS option with ...

Custom Fonts do not show up properly in HTML5

UE - Platform - Mobile - Apr 24, 2015

Custom UMG fonts do not show up correctly when launching to HTML5 from a packaged project. The fonts show up correctly for Windows packaged projects. ...

Graphical issues in editor after changing monitor resolution on Linux

UE - Platform - Linux - Feb 23, 2017

Changing the monitor resolution on Linux causes Editor windows to show graphic errors. ...

Forward Rendering Lightmap Density view flicker

UE - Graphics Features - Aug 20, 2019

The shaders flicker when in Lightmap Density viewmode after enabling Instanced Stereo Rendering in Project Settings > Engine > Rendering > VR  Tested in 4.21.2 (CL - 4753647) 4.22.3 (CL - 7053647), ...

Directional light triggers 'too many overlapping lights' error in forward shading

UE - Graphics Features - Sep 24, 2019

The underlying reason seems to be that the stationary lights require SM channels for casting shadows  from movable objects and they are assigned channels 0,1,2 by lightmass (or somewhere along the w ...

Path Tracing shadow artifacts

UE - Graphics Features - Path Tracer - May 31, 2023

First picture lit is used [Image Removed] Second picture PT is used, this occurs under certain angles of incidence. [Image Removed] ...

Child actor components cannot be individually selected in viewport

UE - Gameplay - Blueprint - May 28, 2015

If a child actor component is placed in a blueprint, that child actor component cannot be individually selected in viewport or scene outliner. ...

Editor crashes if reopened and a row is selected after moving datatablerow editor window in a csv data table

Tools - Apr 24, 2015

If a user moves the row editor window in a csv datatable, then saves, closes, and reopens the editor, the editor will crash if the user then attempts to select a datatable row in the csv datatable w ...

Tiled Landscapes imported with inverted Y axis rotation in World Browser

UE - LD & Modeling - Terrain - Landscape - Feb 23, 2015

When importing tiled landscapes into the world browser, the landscape tiles appear with inverted Y axis rotations. ...