Input Events don't have friendly names in Call Stack tab

UE - Gameplay - Blueprint Editor - Nov 27, 2017

In the Call Stack tab, input events are not listed by their friendly names. Instead they have long names such as InpActEvt_One_K2Node_InputKeyEvent_2. This is different from Actor Events that simp ...

Previewing Node in Material Editor Produces Unexpected Output with DX12

UE - Graphics Features - May 16, 2018

Per Licensee: Since we switched to DX12 we started to see strange behavior in material previews. I was able to reproduce the problem in UE 4.19 vanilla as well. We usually have to force recompilin ...

DoesSocketExist always returns false for Sprite Sockets (flipbooks and sprite components)

UE - Gameplay - Paper2D - Jan 15, 2015

DoesSocketExist always returns false for Sprites in a Flipbook, whether there is a socket on any/all of the Sprites or not. Note: GetSocketLocation seems to work fine, indicating that it is reading ...

Exponential Height Fog renders incorrectly after Set World Origin Location

UE - Graphics Features - Dec 12, 2016

When having an Exponential Height Fog actor far away from origin, after doing Set World Origin Location, Exponential Height Fog's appearance changes. ...

Fix pause flags when recycling sound sources

UE - Audio - Dec 12, 2016

Issue is due to pause flags getting recycled when new sound sources are used from the sound source pool. This is a regression since 4.13, causing audio to pop. ...

FBX & OBJ Files no longer Import with their UVs Depending on Software Used

UE - Editor - Content Pipeline - Import and Export - Sep 6, 2016

Importing an OBJ file no longer imports the UVs. Test asset included for OBJ and FBX version of the same file. Added Test FBX from SketchUp Tested with: 4.12.5 CL-3039270 - Working 4.13.0 CL-31 ...

Tessellation not working properly on Vulkan

UE - Graphics Features - Jan 25, 2018

When a user launches content examples with -vulkan tessellation will not be working. Everything tessellated will appear as if it has no tessellation. This issue is also occurring in 4.18 ...

Foliage instances don't move with a static mesh when it is shared between two foliage actors

UE - World Creation - Worldbuilding Tools - Foliage - Apr 26, 2023

From Licensee: The bug comes from the call of the function `FoliagePartitioningUtils::Update` in the method `AInstancedFoliageActor::MoveInstancesForMovedComponent`. When the function `FoliageParti ...

Disabling collision of an actor after an overlap event will cause the event to fire twice

UE - Gameplay - Sep 3, 2015

Disabling collision of an actor after an overlap event will cause the event to fire twice This is working properly in 4.10-2674146 User Description: Calling on "Set Actor EnableCollision" or "Set ...