Unreal Engine Issues

Cannot build project for the Development configuration after adding a new UFactory code class

Adding a new custom UFactory code class to a project results in no longer being able to build the project for the Development configuration. Prior to adding the UFactory code class the project can b ...

Crash when closing a connection from listen server when using

Crash undoing static mesh translations several times

Crash occurring when you undo moving a static mesh around in the viewport This is NOT occurring in 4.14 ...

Ensure triggered upon improper math expression

An ensure is triggered upon entering an improper math expression. ...

Editor crashes when importing alembic asset

Editor crashes when importing Alembic material asset. The editor will crash once selecting the asset in Windows explorer, before the Import Options window appears. When testing this, we had an ave ...

nDisplay Crash in DisplayClusterDeviceBase.cpp

The showdebug abilitysystem command crashes editor when the target is a child actor

An actor with an AbilitySystemComponent that is spawned by a ChildActorComponent will have a null AbilityActorInfo. This leads to a crash in the ASC when GetDebugTarget attempts to access AbilityAct ...

Editor crashes when re-opening a project that had previously successfully applied a Live Coding patch

The Editor will crash while opening a project that had previously successfully had a Live Coding patch applied, and then was closed. The `LiveCodingConsole.exe` process continues to run after both t ...

[AI] Crash in UGameplayDebuggerLocalController::OnDebugDraw

UGameplayDebuggerLocalController::OnDebugDraw crashed with a dereferenced nullptr for CachedReplicator. ...

[AI] SmartObject with Precondition in a persistent collection crashes editor when exiting PIE

Adding the Precondition to the SmartObject caused an assertion when it was part of a persistent collection. The precondition needs to be able to pass its Activate method to cause the assert. This b ...