Unreal Engine Issues
Unreal Engine Issues
The AABBTree spatial acceleration structure goes off-sync when physics substepping is enabled in a "low" framerate environment.
UE - Simulation - Physics - Mar 15, 2024When you enable the physics substepping, if you run the console command p.Chaos.Solver.DebugDrawSpatialAccelerationStructure 1, you can see how does not follow the physical object. The user that rep ...
Sparse volume textures displayed in Heterogeneous volume only visible in left eye
UE - Niagara - Rendering - Mar 14, 2024Sparse volume textures displayed in Heterogeneous volumes are only visible in the left eye, as well as Niagara Fluid Sims. UDN for reference: [Link Removed] ...
Performing seamless server travel while a Legacy Camera Shake with an Anim Sequence set is ongoing will cause a crash
UE - Anim - Sequencer - Mar 14, 2024When we server travel with seamless travel enabled, and a legacy camera shake with an anim sequence set is currently ongoing, we will get a crash due to the UMovieSceneEntitySystemLinker failing a c ...
When copying category properties, all the EditConst flags are not checked. This overrides variables that should not be written.
UE - Editor - Workflow Systems - Mar 12, 2024If you create two actors that have the same structure of variables in a category, and you try to copy the category variables of one actor into the other, variables that have ReadOnly/EditConst speci ...
Jitter playing animation on actor located far from origin
UE - Anim - Runtime - Mar 12, 2024A licensee has reported an issue with jitter when playing animations on an actor translated far from the origin (300000.0 units). This repros on the First Person Template. The issue is more obviou ...
Water reflections and GI flicker in 5.4 and 5.3 (fine in 5.2)
UE - Graphics Features - Mar 7, 2024Since 5.3 customers have been reporting flicker with water surfaces, demonstrating that in 5.2 this flicker is not present. [Link Removed] ...
Enhanced Input Action Key Remapping maps old mapping over incoming mapping in an unintuitive way
UE - Gameplay - Input - Mar 7, 2024On EnhancedInputSubsystemInterface.cpp:1040, RebuildControlMappings has a check to preserve mappings for identical action key maps. In most cases, this appears to work correctly; however, in the cas ...
When an active Niagara Component is moved and reset+reactivated in the same frame, "Interpolated Spawning" causes "Spawn Burst Instantaneous" to spawn particles in the previous frame's outdated location
UE - Niagara - Mar 6, 2024Consider a Niagara System with an Emitter in "Global Space" that has "Interpolated Spawning" active and a "Spawn Burst Instantaneous" module with a "Spawn Time" of 0.0 (for example, the built-in Con ...
TakeRecorder does not add a track to a level sequence when niagara FX is spawned
UE - Anim - Sequencer - Mar 5, 2024In UTakeRecorderActorSource::EnsureObjectTemplateHasComponent() function, MakeUniqueObjectName() generates the same name of a component which CachedObjectTemplate for TakeRecorder has already had. T ...
"Override Function" search box in the Blueprint Editor does not match actual function name (only its display name)
UE - Gameplay - Blueprint Editor - Mar 5, 2024This is a quality-of-life issue for UE users. The issue was also detailed by the UDN user in a video in the linked UDN case. The Blueprint Editor provides an "Override Function" functionality in th ...