Unreal Engine Issues
Unreal Engine Issues
NDC Sorting Incorrect
UE - Rendering - Architecture - Niagara - Mar 12, 2026Using the new NDC BP nodes in 5.7 causes sorting to break; one system, regardless of world placement, is always drawn over the other. Even when the viewpoint puts the dominant system in the foregrou ...
Frame-locked sequencer intermittently triggers notify state end event
UE - Runtime - Animation - Mar 10, 2026Frame-locked Sequencers can occasionally produce frames with a zero delta time due to frame number truncation. When this occurs, if the animation cursor is within the range of a Notify State that is ...
Rare crash when changing scalability settings rapidly
UE - Rendering - RHI - Mar 10, 2026It seems like the code in RefreshSamplerStatesCallback() can overlap with FillUniformBuffer when it mutates the Wrap_WorldGroupSettings and Clamp_WorldGroupSettings FSharedSamplerState objects. Addi ...
Panini Lens Projection and Post Process buffers broken
UE - CAPT - Color Pipeline and Rendering - Mar 9, 2026Panini Lens Distortion does not appear to affect some buffers (SceneDepth, CustomDepth, WorldNormal, etc.) consistently. These buffers behaved correctly in 5.3 ...
LevelStreamingPersistence: Crash when streaming in destroyed map actor with persisted properties
UE - World Creation - Worldbuilding Tools - Mar 6, 2026Context The LevelStreamingPersistence plugin can be used to remember and restore properties on actors and components that are part of a streamed level. Saved property values are restored when a lev ...
LevelStreamingPersistence: BP added components don't persist properties in PIE until map actor resave
UE - World Creation - Worldbuilding Tools - Mar 6, 2026Context The LevelStreamingPersistence plugin can be used to remember and restore properties on actors, components and other objects that are part of a streamed level. Persisted properties are resto ...
LevelStreamingPersistence: BP variables that aren't Instance Editable get reset
UE - World Creation - Worldbuilding Tools - Mar 6, 2026Context The LevelStreamingPersistence plugin can be used to remember and restore properties on actors and components that are part of a streamed level. Blueprint variables can be marked as instan ...
Adding a level instance to the persistent level puts its navmesh in the wrong place
UE - Runtime - Character - Mar 6, 2026Engine crashes when renaming assets inside an L10N folder.
UE - AI Workflows - UI Systems - Localization - Mar 3, 2026The engine crashes when renaming a localizable asset inside an L10N folder. The engine attempts to associate it with the original localizable asset, but it is unable to find it and ends up accessing ...
RecastNavmesh contents are non-deterministic across navmesh builds
UE - Runtime - Character - Mar 2, 2026Per-tile data such as TileIndex and salt are stored non-deterministically. ...