FBX export from UE4 with multiple materials the UV is corrupted

Tools - Apr 18, 2016

When exporting a Static Mesh from within UE4 that has multiple materials, some of the material IDs will be condensed into a single ID which will mess up how the material assignment for that part of ...

Crosshair and hand no longer present in Blueprint Editor

UE - Gameplay - Blueprint Editor - Feb 20, 2017

In 4.14 and earlier version hovering the mouse over a pin would change the mouse into a crosshair shape, then if you were to press and hold the Ctrl key and drag with the mouse, it would change into ...

wire import crash on file generated by alias 2021.3

UE - Editor - Content Pipeline - Import and Export - Jul 20, 2021

Our company has updated Alias to 2021.3.1 and now Datasmith crashed when importing .wire files. Previously we had Alias 2019 and Alias 2021.1 installed. Now just Alias 2021.3.1 and then the issue be ...

KiteDemo: Failed to load Outer for resources

Docs - Samples - May 3, 2017

While testing KiteDemo for 4.16 Sample Pass – //UE4/Release-4.16 CL 3420042 in Binary – Two warnings occurred when opening the project.LoadErrors:Warning: Warning CreateExport: Failed to load Outer ...

Missing assignment/recursion in UHLODProxy::FindFirstActor can potentially lead to an infinite loop

UE - World Creation - Worldbuilding Tools - HLOD - Aug 13, 2018

User reports on the forums of being stuck in an infinite loop and noticed a dead branch in the titled function:The body of if (SubLODActor) doesn't actually do anything, guaranteeing an infinite loo ...

Building Lighting will Generate Additional Lightmaps after Rotating Lightsource

UE - Graphics Features - Jul 7, 2015

Lightmap sizes seem inconsistent after rotating a light source and rebuilding the lighting. This causes concern about file sizes when packaging the project that is using baked static lighting. The ...

Lansdcape grass generation fails on Mac running OSX 10.10.1

UE - Platform - Mobile - May 12, 2015

Grass map heights all appear to be 0 when generating grass on a Mac running 10.10. This bug does not occur on Macs running OSX 10.9.5 Putting a breakpoint in LandscapeGrass.cpp line 476 you can se ...

Disabling the Paper 2D plugin causes a packaged project to not open

UE - Foundation - Cpp Tools - Automation Tool - Jun 19, 2017

When working in a project that is in 4.16, disabling the Paper2D plugin causes a packaged version of the project to not open. This issue is different from previous versions as disabling the plugin i ...

Crash When Toggling Visibility of Level with Planar Reflection

UE - LD & Modeling - Terrain - Landscape - Mar 26, 2018

This crash occurs in 4.19 and 4.20 but not 4.18. Repro'd in 4.19.0-3944462 and 4.20.0-3955769 and 3964322. This is a regression. Per UDN licensee: When I'm showing/hiding levels in editor (in le ...

Stencil that has been marked with ResponsiveAA is cleared by DistortionPass

UE - Graphics Features - Dec 14, 2021

From UDN: When an object with ResponsiveAA enabled is in the screen and then an object with Distortion enabled comes into the screen, ResponsiveAA does not work. ​ I guess this is because the Ste ...