Speedtree shader node broken in a Shipping package.

UE - Graphics Features - Jul 6, 2018

I attached the 4.19 and 4.20 version of the project. The trees have no leaves when packaging with Shipping in 4.20 preview 5. It works fine in 4.19. ...

Using LOD for Per-Poly collision doesn't work

UE - Simulation - Physics - Aug 11, 2016

When choosing LODs for per-poly collision the static mesh stops blocking actors in the level. I tested this on 4.13 preview 1 and it is still an issue. I used the 3dsMax workflow for this process ht ...

iOS apps crash on devices with iOS version 11.2.2 when Metal 2.0 is enabled

UE - Platform - Mobile - Jan 22, 2018

Launching an iOS App that is set to Metal 2.0 on a device with iOS version 11.2.2 causes the app to crash and return to the home screen. This was tested on an iPad Pro as I do not have access to any ...

Spline don't deform landscapes in certain setups

UE - LD & Modeling - Terrain - Landscape - Dec 26, 2019

The splines do not deform the landscape when the path is made with a straight spline. When you move a spline point to bend the road it will deform the landscape, but the deformation accuracy seems t ...

Able to scale Math Hall graphs down to 0 which distorts them in ContentExamples

Docs - Samples - Sep 19, 2016

All of the graphs in the Math_Hall can be scaled down to 0 which causes the graphs to appear distorted. These should probably be clamped as 1 since scaling them down to 0 does not show any useful in ...

"Assertion failed: CellIndex < CellIndexMax" when there are a lot of HISM foliage in a level

UE - World Creation - Worldbuilding Tools - Foliage - Aug 19, 2024

Users have come across an issue in 5.4 that causes an assert when many foliage or HISM objects are placed in a level due to a cell size limit. ...

Renaming engine folder causes GenerateProjectFiles to fail on Mac

UE - Platform - Apple - Jul 11, 2016

When running GenerateProjectFiles.command on Mac from a folder with a space in the nam, the folder structure is read incorrectly. This leads to the .command file failing when trying to set up Mono ...

IOS 11 Freezes When Generating Particles Using SphereMask

UE - Platform - Mobile - Nov 16, 2018

When playing a particle using SphereMask, iOS 11 device terminal freezes.This issue is not a crash, it's screen freeze. Reproduced deviceiphoneX :iOS 11.4.1iphone7 :iOS 11.4.1 Not reproduced devic ...

Poor performance when Player Collision view mode active in City Sample

UE - Simulation - Core - Apr 2, 2024

The Editor become unresponsive and then has very low frame rates after activating the Player Collision view mode in the Small_City_LVL and Large_City_LVL maps in the CitySample project. The curre ...

Possible crash reimporting destructible assets

UE - Simulation - Physics - Destruction - Jan 20, 2017

This won't always happen, but the call in ImportDestructibleMeshFromApexDestructibleAsset to LODModel.ReleaseResources(); will enqueue render commands to release the resource, but the call after tha ...