Unreal Engine Issues
Unreal Engine Issues
Particle disappears if it is using PSA_Velocity and setting custom time dilation 0
UE - Graphics Features - Dec 7, 2016A licensee reported some of their particles disappear when setting the actor's custom time dilation 0. This seems to happen when a particle is using PSA_Velocity as Screen Alignment. This repros in ...
Editor crashes while switching to paint mode if material has a grass output and landscape visibility mask
UE - LD & Modeling - Terrain - Landscape - Aug 10, 2016Editor crashes while switching to paint mode if material has a grass output and landscape visibility mask. Frequency: 3/3 ...
Certain UPROPERTY values are not updated during auto-recompile
UE - Gameplay - Blueprint - Aug 4, 2016Sometimes manual recompile is required to make a blueprint actually recompile data-only changes, but not always. If the last manual compile was with default values, then changes are not updated. If ...
Modifiers do not behave as expected when adding conflicting mappings of different priorities
UE - Gameplay - Input - Apr 11, 2025Breaking a level instance can not remove the level instance from world
UE - World Creation - Worldbuilding Tools - Level Instances - Nov 5, 2024Currently there is no stable way to break level instances ...
Focus mode in the Editor does not handle Actors without PrimitiveComponent correctly, treating them as if they were at the origin (0,0,0), skewing the camera placement.
UE - World Creation - Worldbuilding Tools - Nov 18, 2024Focus mode in the Editor does not handle Actors without PrimitiveComponent correctly, treating them as if they were at the origin (0,0,0), skewing the camera placement. Some Actors like the WorldDat ...
Build All Levels fails with duplicate level instances
UE - World Creation - Worldbuilding Tools - Level Instances - Jan 24, 2024iPadOS AR App Crashes when ARKit's "Use Scene Depth for Occlusion" is Enabled
UE - Platform - XR - Dec 13, 2024Does not crash in 5.4 on same hardware so looks like a regression. Attached Unreal logs indicate source of critical error: 'FARKitCameraOverlayMobilePS' shader uniform expression set mismatched sh ...
Spawned skeletal animations don't animate
UE - Anim - Sequencer - Oct 30, 2017Set user focus for player 0 will cause other local players to lose input
UE - Gameplay - Input - Feb 28, 2019When the player at index 0 sets its user focus it will cause other players to lose input. This does not occur when setting the user focus of players with an index higher than 0. ...