Unreal Engine Issues
Unreal Engine Issues
ABI break in Pixel Streaming appearing in Packaged builds
PixelStreaming - Feb 24, 2022WebRTC binaries do not have the correct headers and the headers need to be updated. Linux binaries also need to be updated to match the new headers. ...
LevelInstance: Editor Texture Streaming (UDN)
UE - World Creation - Worldbuilding Tools - Level Instances - Aug 14, 2023Further investigate and fix Editor Level Instance texture streaming data update which currently isn't being updated when moving a Level Instance in the editor. ...
Code based component name differs in Blueprint Components and main Viewports Details
UE - Gameplay - Blueprint - Jun 24, 2015If the TEXT("") portion of CreateDefaultSubobject is changed then the name of the component will update in the main viewport details but will not update inside the blueprint based on the class. ...
LevelInstance Property overrides are broken when duplicating a LI
UE - World Creation - Worldbuilding Tools - Level Instances - Nov 10, 2025Upon light debugging, it seems like the overrides depend on the name of the actors in the LI. The duplicated LI does have FLevelInstanceActorPropertyOverride but the Actor names were not updated upd ...
Reimport of a MaterialX file as material instance fails
UE - Editor - Content Pipeline - Import and Export - Apr 5, 2024In Main, the reimport does not generate an error but the material instance is not updated. ...
Start ARCore Session - Session config fails
UE - Platform - XR - Nov 27, 2019ARCore Regression Not seen when updating 4.23 project to 4.24 This did NOT reproduce when updating 4.24 project (Created with Preview 4) to 4.25 MAIN 10406617 ...
UMG materials do not correctly access material parameter collections (all of the values are black)
UE - Editor - UI Systems - Jul 22, 2015Edit MattK: The reason they do not work is that material parameter collections are updated inside of a uworld that slate doesnt have access to. We just need to figure out a way to update the necess ...
Edits to TriggerBox ChildActor are only reflected in Viewport on first edit
UE - Gameplay - Blueprint - Dec 6, 2018Edits to TriggerBox 'Shape' parameters (in a ChildActor component) only update in Blueprint Viewport once, to view subsequent updates one must re-open Blueprint. Confirmed in 4.22 MAIN - 4631879 ...
Niagara Particles do not respond to Set World Origin Location
UE - Niagara - Aug 17, 2020Setting the world origin will not update existing Niagara particles. ...
Character actor with simulated physics using an Anim Instance blueprint does not preview when scrubbing through sequencer timeline
UE - Anim - Sequencer - Jul 17, 2018A character actor using an AnimInstance blueprint will not update in editor when scrubbing ...