Unreal Engine Issues

Deferred spawned actors can receive BeginPlay before they are finished spawning

Actors that are deferred spawned on BeginPlay can be added to the world while AWorldSettings::NotifyBeginPlay is still iterating the world's actors and dispatching BeginPlay. AActor::DispatchBeginPl ...

GameInstance and subsystem initialization order is incorrect for Play In Editor

The order of world and game instance initialization is different between a true standalone game (cooked game or an editor build with -game) and a Play In Editor game. Specifically, in Play in Editor ...

Sampling UV1 on a Nanite mesh with one UV channel returns a constant value

This is general for any UV channel past what the static mesh has, rather than specifically for UV channel 1. ...

Push-model blueprint array property not properly marked dirty if modified by different actor

In KismetArrayLibrary.h, functions that modify the array property call MARK_PROPERTY_DIRTY(Stack.Object, ArrayProperty). Because these calls use the stack object and not the property's owner, modify ...

Raytraced Shadows render incorrectly in a project that has been converted from 5.0.3 to 5.1.1 to 5.2

Version to VersionResultsNew 5.0.3 project to 5.1.1Works as ExpectedNew 5.1.1 project to 5.2Works as ExpectedNew 5.0.3 project to 5.1.1 to 5.2Bug OccursNew 5.0.3 project to 5.2 Bug Occurs The scene ...

Destroying a beacon from a RPC no longer destroys the beacon actor

This seems to be because of recent changes made for [Link Removed]. Now that UNetDriver::bInTick is being properly tracked for derived classes, AOnlineBeacon::CleanupNetDriver is now deferring destr ...

CustomPrimitiveData is not updated for Niagara if it's paused on DX12

FComponentReference loses its actor reference when the target actor is reinstanced

The "OtherActor" pointer in an FComponentReference is invalidated when the referenced actor is reinstanced after compilation. ...

Montage sections are not respected when auto blend out is off

Auto-Save failing, pulling old saves and blocks users from continuing

Reporting an issue where are users are getting prompted to auto-save, but then it appears to fail and asks them to manually save. They're being prompted with outdated save files, but get stuck in a ...