Setting the sequence of a Level Sequence Actor after playing a sequence with an event will crash if played

UE - Anim - Sequencer - Mar 9, 2023

The editor crashes trying to find an event on the other level sequence when playing back the new one. ...

[AI] FMassBatchedEntityCommand uses wrong scoped access

UE - AI - Mass - Mar 9, 2023

FMassBatchedEntityCommand uses UE_MT_SCOPED_READ_ACCESS in both of its Add methods but it writes data to its TArray that it is supposed to be protecting. ...

Right-clicking a DataAsset Based on a Blueprint Class can Crash the Editor

UE - Gameplay - Blueprint - Mar 7, 2023

The editor can crash when you attempt to open the context menu for a data asset based on a blueprint class. This happens only if the blueprint class the data asset is based on is not currently loade ...

Anim notifies trigger repeatedly/every frame when using an animation mode track set to Use Anim Blueprint in a Level Sequence

UE - Anim - Runtime - Mar 6, 2023

The anim mode track seems to cause the sequence to retrigger notifies every frame. ...

[Python] Entry items are not displayed when sub-menus are added to the "LevelEditor.ActorContextMenu" section.

UE - Editor - Workflow Systems - Mar 6, 2023

When the [Actor] menu is opened, the menu of the added entry can be displayed. When the [Actor] menu is opened from the LevelEditor's Outliner, it is not displayed.  Solution: Add the required menu ...

ICVFX Editor: Last Entry Index of "Pre-Viewport Color Grading" shows "Entire Cluster" group data.

UE - Virtual Production - nDisplay - Mar 2, 2023

The ICVFX view is displaying parameters for the entire cluster when the group in the right-most index is selected. Its expected that the right-most index group should behave like every other group, ...

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 ...

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. ...