Crash when Toggling Landscape Mode with Hidden Sub-Level containing a Landscape

UE - LD & Modeling - Terrain - Landscape - Oct 28, 2016

A crash occurs when you have a hidden Sub-level containing a landscape and you attempt to toggle the Landscape Mode after re-opening the project. The licensee has authored their own fix for this is ...

Landscape Grass Foliage Instances Culling Incorrectly

UE - World Creation - Worldbuilding Tools - Foliage - Feb 20, 2017

Foliage instances are culling incorrectly and seem to cull based off of the landscape components and/or entire foliage clusters. Regression? Yes, this issue does not occur in the 4.14.3 binary rele ...

Audio volume values get reset

UE - Anim - Sequencer - Aug 9, 2017

Also confirmed in 4.22 Main @ CL 4413632 ...

Packaging fails with too many instanced static meshes

UE - Graphics Features - Jun 8, 2018

Project will fail to package with more than one actor containing ISM Components. From user: "...After some testing I found that it only occurs if there are multiple actors in a map (either of the ...

Users project is crashing when double clicking the exe file after packaging for windows

UE - AI - Mar 7, 2015

If you package this users project, you will get a fatal error crash after double clicking the exe file. I was unable to reproduce this issue without using the users project. Project download link: ...

Calling a native interface function implemented by a non-nativized Blueprint asset from a nativized Blueprint asset will silently fail at runtime.

UE - Gameplay - Blueprint - Apr 29, 2020

In the sample project we have a Widget Blueprint asset (SomeWidget) that implements a native interface (PrintSomethingInterface.h). However, in the DefaultEditor.ini file, we've also excluded all Wi ...

Texture2D values and gradients are incorrectly appended in Alpha channel

UE - Graphics Features - Oct 6, 2020

After creating new material and inputting a texture coordinate node, and connecting with two mask nodes for R and G, then connecting to "Make Float 4" nodes, the values in the Alpha Channel don't ma ...

Skeletal Meshes with Physics assets with less than 5 bodies will not use flag for Start Awake

UE - Simulation - Physics - Dec 8, 2015

When using a Physics Asset with 4 or less physics bodies the flag for Start Awake cannot be disabled, even if unchecked, when Simulate Physics is set to true. I've attached a project with assets f ...

Increased load times in a packaged project

UE - Foundation - Core - Nov 10, 2017

There appear to be longer load times between 4.16 and 4.17/4.18 when opening a packaged project. Possible regression from 4.16 ...