GAS: RemoveActiveGameplayEffect crashes when called during world teardown for periodic GEs

UE - Gameplay - Gameplay Ability System - Mar 2, 2023

AbilitySystemComponent crashes when RemoveActiveGameplayEffect is called during world teardown for an active gameplay effect that ticks periodically, by unsafe GetWorld()->GetTimerManager() access w ...

Standalone Material Function Instance creation results in crash

UE - Rendering Architecture - Materials - Mar 2, 2023

Coming from UDN https://udn.unrealengine.com/s/case/5004z00001mDBzzAAG/material-instance-asset-creation-workflows?fromCase=1 Either standalone MFI creation should work just like MaterialInstances, ...

[AI] Editor crash when moving BT nodes if the BB has a BlackboardKeyType_Object with a null BaseClass

UE - AI - BehaviorTree - Feb 28, 2023

The editor crashes if a BT is changed while its Blackboard has an Object type key with its BaseClass set to None (null). There is no warning or log alerting the user that setting the BaseClass to No ...

CopyTask in BuildGraph never throws an exception if the copy fails

UE - Foundation - Horde - BuildGraph - Feb 28, 2023

CopyFile function in CommandUtils.cs assumes that an exception will be thrown if the number of retries is exceeded, but the loop condition prevents it from being thrown. Following fix works:publics ...

Light leaks when cast shadow disabled light is applied to the Hair material.

UE - Graphics Features - Shadows - Feb 27, 2023

There seems to be a leak in the ContactShadow determination in DeferredLightingCommon.ush ShadowRayCast(), but I could not determine if this is the specification. This problem always occurs from 4. ...

WaitGameplayTagQuery does not adhere to its Query rules if there are no tags on the Actor

UE - Gameplay - Gameplay Ability System - Feb 25, 2023

Hello, I posted a bug submission some days ago on [Link Removed], however I received a mail asking me to repost it here instead. So here I go, even if it's not a question per say. Description: T ...

Update FLevelEditorViewportClient::InputAxis to forward mouse axis events as well

UE - Gameplay - Input - Feb 23, 2023

FLevelEditorViewportClient::InputAxis needs to be updated to use the device mapper and FInputDeviceID's instead of the old int 32 ControllerID. Looks like this was missed during the refactor to use ...

ARecastNavMesh.bPerformVoxelFiltering doesn't seem to be working

UE - AI - Navigation - Feb 21, 2023

ARecastNavMesh.bPerformVoxelFiltering doesn't seem to be working anymore. ...

Eyeball appears opaque on project launch

UE - Graphics Features - Feb 21, 2023