Vertex Interpolate Node Doesn't Work with Lightmass

UE - Graphics Features - Lumen - Aug 8, 2018

The vertex interpolate node doesn't work with lightmass. Found in 4.19 CL# 4033788, 4.20 CL# 4233996, and 4.21 CL# 4258917 ...

Landscapes do not render on PowerVR device

UE - Platform - Mobile - Sep 2, 2016

When using a level with a landscape on an Android Device with a PowerVR gpu the landscape is not rendering. This was reproduced with Asset# 4719Model: Galaxy S4 GT-19500GPU: PowerVR SGX544MP3OS: 4. ...

Cursors: 'Grab Hand' and 'Grab Hand Closed' appear as 'Hand' in packaged project

UE - Editor - UI Systems - Slate - Jul 13, 2018

GrabHand Cursors appear as Hand (Index finger cursor) in a packaged project 4.20p5 CL# 4173640 4.21 CL# 4179764 ...

LOD materials are wrong for multiple tree static meshes in Kitedemo

Docs - Samples - Nov 10, 2016

A lot of the tree meshes become big and blocky at the furthest LOD level. This causes them to look odd when they are far away in the distance. This is a regression from 4.13.2 ...

Clicking on an Actor in the World Outliner jumps to Details tab if it is docked with the World Outliner

Tools - Dec 20, 2017

When clicking on a actor in the World Outliner while the Details tab is docked to it, it switches over to the Details tab. This bug was not present in 4.17.2 but is in 4.18 and 4.19. ...

Crash undoing "replace actor with" when replaced object constructs child actors

UE - Gameplay - Oct 10, 2016

The problem seems to be that the construction scripts doubled up all the BlueprintCreatedComponents, so there are now 2 scene components(actually the same one duplicated) and now 2 child actor compo ...

Niagara Crash After Adding More Than 20 Emitters to a System

UE - Niagara - May 24, 2019

The Editor will crash after adding more than 20 Emitters to a system. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6574378, 4.23 CL# 6599617 ...

Unable to import animation data from fbx with bone names starting with a number

UE - Anim - Rigging - Control Rig - Jul 31, 2023

When importing animations with numeric names from fbx in UE5.2 or later, the AnimationSequence asset is created but the animation data is not imported. The workaround is to not prefix bones with num ...

Android + Bluetooth Mouse: Hover events and Get Mouse Position on Viewport not working

UE - Platform - Mobile - Jul 11, 2018

No hover events firing when using a bluetooth mouse on android. Tested with 4.20p5 CL# 4173645 4.21 CL# 4179794 ...

CSM Shadows disappearing at larger coordinates with different FOVs

UE - Graphics Features - Shadows - Apr 5, 2024

Cascaded shadows disappear at some FOVs when far from the world origin. This behavior was not present in 5.2. Also found in CL: 32690246 in Release-5.4 ...