Crash in FMaterialEditor::NotifyPostChange

Tools - Jan 16, 2017

User has identified a potential crash, needs investigation: https://udn.unrealengine.com/questions/330701/crash-in-fmaterialeditornotifypostchange.html ...

When changing a variable of a component in an attached Actor, the variable becomes read-only

UE - Gameplay - Aug 1, 2018

Changing a variable of a component with an instance of BP derived from StaticMeshActor or SkeletalMeshActor attached to another actor will cause that variable to be read-only. It did not reproduce w ...

Paper Terrain splines should not allow 'in/out of plane' movement

UE - Gameplay - Paper2D - Feb 4, 2015

They are effectively 2D and spline points should be constrained as such. We should snap them to the XZ plane in component to avoid issues and make it nicer for users. ...

GetActorsPerception useless in 4.7

UE - AI - Mar 11, 2015

The new AI Perception system's BP API, marketed in release notes, depends on UAIPerceptionComponent::GetActorsPerception, that, as one AnswerHub user points out, is useless due to a buggy condition ...

Nav Link Component's Transform Being Ignored

UE - AI - Apr 5, 2017

Nav Link Components are not respecting transform changes inside of the blueprint's viewport. They will always originate from the Actor's origin point. ...

Volumetric fog rendering gets cut off at the apex for some spot lights when viewed from certain angles

UE - Rendering - Architecture - Apr 19, 2023

Fix is found in licensee’s pull request:https://github.com/EpicGames/UnrealEngine/pull/10333/files ...

Setup.sh script does not work in directories with a space

UE - Platform - Linux - Feb 9, 2017

According to AnswerHub, Setup.sh will fail: https://answers.unrealengine.com/questions/427889/building-engine-on-linux-gitdependenciessh-no-such.html ...

RecastNavMesh is not generated at loaded sublevel

UE - AI - Aug 16, 2018

RecastNavMesh is not generated at the sub level dynamically added in C ++ in 4.20. In 4.18, 4.19 it was generated normally. Probably, changes to the large number about NavMesh systems from 4.19 to ...

Can no longer bulk edit material properties with the property matrix

UE - Editor - Content Pipeline - Content Browser - Aug 24, 2015

In 4.7 you could select multiple material assets in the content browser, right click and choose Asset Actions > Property Matrix to bulk edit material properties, but in 4.8 and 4.9, this feature is ...

Impossible to save assets after change in redirectors

UE - Foundation - Core - UObject - Dec 13, 2018

One of our licensees pointed out this problem. I've tried all the common redirector problems (write / read permission, multiple instances of the editor, renaming the assets, running the commandle ...