Deferred spawned actors can receive BeginPlay before they are finished spawning

UE - Framework - May 18, 2023

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 ...

Starting position in VR Template HMD locomotion map lower than Motion Controller map

Docs - Samples - Jul 29, 2016

Starting position for the HMD locomotion map in the VR template is very close to the ground, it's also lower than the companion map for Motion Controller movement. May be due to pawn differences? F ...

Resolution issue causes large black bar on Galaxy Note 4 when app starts

UE - Platform - Mobile - Aug 2, 2016

This issue only seems to affect the GalaxyNote4_5543 OS: 4.4.4 This issue is NOT occurring on devices with the same GPU This issue is NOT occurring on devices with the same OS If you lock the scr ...

Type Promotion nodes should cache pins that have had their type manually converted by the user

zComponent - Archive - Apr 7, 2022

[Link Removed] We should just cache any user-converted pins on the type promotion nodes and make sure to keep those types if they are valid. If they are invalid, then we can orphan them or someth ...

IVideoRecordingSystem::EnableRecording call on Windows shifts viewport drawing position

zComponent - Archive - May 12, 2022

The viewport is shifted by the IVideoRecordingSystem::SetRecording call. This problem occurs in play standalone mode and packaged build running as window mode. (not occur in fullscreen mode) The vie ...

Subobjects can change sorting order in Blueprint Subobject Editor

UE - Gameplay - Blueprint Editor - Apr 3, 2023

Subobject sorting is not stable in the Subobject editor, so the UX is bad if you are creating complex hierarchies because it's difficult to keep track of newly added or reordered components. ...

Subobject editor collapsed nodes are auto expanded when adding or moving a node

UE - Framework - Blueprint Editor - Apr 3, 2023

Node operations cause all of the collapsed nodes to be auto expanded. This is disruptive when working with complex hierarchies because you can't hide irrelevant components. ...

The hair shading near the screen edge becomes whiter if only a skylight applies

UE - Graphics Features - Apr 4, 2023

This appears to be an issue with Lumen, with some off-screen information making its way on-screen during an upsampling pass. We checked a Renderdoc capture and that is where it seems to come from. ...

The hierarchy of Actors in LevelInstances can break when using BPs as parent

UE - World Creation - Worldbuilding Tools - Level Instances - Feb 18, 2026

The hierarchy of a LevelInstance actors (Outliner) will break when cooking. The source is the call to AActor::RerunConstructionScripts in FWorldPartitionLevelHelper::MoveExternalActorsToLevel. The ...