Unreal Engine Issues
Unreal Engine Issues
NDC Sorting Incorrect
UE - Niagara - Rendering - 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 ...
Rare crash when changing scalability settings rapidly
UE - Rendering - Architecture - 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 ...
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 ...
Engine crashes when renaming assets inside an L10N folder.
UE - Editor - 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 ...
Nanite displacement issue when using along non-uniform scaling
UE - Rendering - Graphics Features - Nanite - Feb 26, 2026Nanite Tessellation displacement direction is incorrect for landscapes with non-uniform scales. It seems to use the normal from the unscaled landscape, which can result in the displacement causing t ...
InvariantLeft and InvariantRight justification mispositions wrapped multi-line text
UE - Editor - UI Systems - Feb 26, 2026When a UMG Text widget is set to Auto Wrap and uses InvariantLeft or InvariantRight, the wrapped visual lines are positioned differently than expected compared to Left/Right. In the current engine ...
Audio Memory Growth While Paused
UE - Audio - Feb 26, 2026User has provided a trace file attached to case. User experiencing going out of memory during gameplay with console command "Pause" activated. Using 5.6 from Perforce in the Release-5.6.0 stream at ...
Crash caused by a race condition in Nanite::DispatchBasePass()
UE - Rendering - Graphics Features - Nanite - Feb 25, 2026Nanite::BuildShadingCommands() launches two asynchronous tasks: ShadingCommands.SetupTask ShadingCommands.BuildCommandsTask BuildCommandsTask is responsible for modifying ShadingCommands.Commands ...
Compatible Skeleton Animation does not retarget the same on duplicate skeleton
UE - Anim - Rigging - Retargeting - Jan 29, 2026If a mesh is exported from the engine, reimported as a new skeleton and mesh, and then marked as a compatible skeleton. Animation will have slightly different rotations playing on the skeleton. ...
GameplayTagQuery AutoDescription not refreshed after GameplayTag redirect on load
UE - Gameplay - Gameplay Tags - Jan 21, 2026FGameplayTagQuery does not refresh its cached AutoDescription after GameplayTag redirects are applied during asset load. As a result, after renaming a GameplayTag and restarting the editor, the Game ...