Unreal Engine Issues
Unreal Engine Issues
WP level instance runtime settings affect streaming generation
UE - World Creation - Worldbuilding Tools - World Partition - Nov 16, 2023If a level instance uses different runtime settings then it can override the main WP's runtime settings with UWorldPartitionRuntimeSpatialHash::ApplyCVars Runtime settings:GRuntimeSpatialHashUseA ...
Level Streaming - Always Loaded sublevel affected by streaming volumes
UE - World Creation - Worldbuilding Tools - Mar 19, 2024The docs mention: "When a streaming Level is set to Always Loaded, it is loaded together with the persistent Level. It also becomes visible at the same time as the persistent Level. It ignores strea ...
Branching Points in a Montage Affect the Rotation Outcome of Root Motion
UE - Anim - Runtime - Mar 28, 2025When playing Montages with Root Motion, the sub stepper extracts root motion transform in small increments. If a Branching Point exists within the interval being extracted, the extraction range is s ...
Chinese Characters causing the Editor to crash when using them in a blueprint
UE - Editor - UI Systems - Localization - Dec 4, 2014When using Chinese characters in Blueprints, it will almost always see a crash when saving the project and PIE. This only occurs in the 4.6 release build. It does not occur in Main. Crash Report: ...
Wind affects cloth in scene when there is no Wind Directional Source actor placed
UE - Simulation - Physics - Character - Jun 22, 2015If a character with a cloth simulation or a mesh with a cloth simulation is in the scene there is wind force that is being applied to the cloth. The only way to remove this is by setting a Wind Dire ...
Landscape cooking takes as much as 6 times longer in 4.18
UE - LD & Modeling - Terrain - Landscape - Jan 10, 2018Some developers are finding that the change to add a bunch of shader types to FLandscapeMaterialResource::GetExcludedShaderTypes() in 4.18.2 increased their project cooking times on PC or console by ...
InstancedStaticMeshes disappear in Shipping builds on mobile when affected by dynamic point lights
UE - Platform - Mobile - Aug 22, 2019This ticket is to add the safe workaround for 4.23.1, with a more optimal fix coming in 4.24. ...
Unable to affect setting cubemap blend in skyLight and reflections on transluscent materials
UE - Rendering Architecture - Oct 17, 2023Attempting to blend SkyLight Cubemaps via the SetCubemapBlend function to blend between different Cubemaps to make the changes seamless is not reflected. As a workaround, in LumenTracingCommon.ush, ...
Teleport only affects static mesh of destructible meshes, collision remains at original location
UE - Simulation - Physics - Destruction - Sep 15, 2015Teleporting a destructible mesh only transports the mesh of the object, the collision remains where it was originally located. Further, if the player runs into the collision, the static mesh will re ...
Line height for text boxes does not appear to be affected by scaling when using a scale box
UE - Editor - UI Systems - Jan 12, 2016When scaling text with a scale box the letter will begin to overlap when scaled up or become really far apart when scaling down (this is referring to the space between the top and bottom of the lett ...