Unreal Engine Issues
Unreal Engine Issues
Can Ever Affect Navigation Option Being Reset Upon PIE
UE - AI - Mar 29, 2016Upon PIE, the Can Ever Affect Navigation option is being reset on the capsule component of an empty character. Dragging the empty character into the level, setting the option to true, and then playi ...
Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer
UE - Simulation - Physics - Destruction - Aug 26, 2025Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer. The licensee has provided his analysis: In 5.6, when creating a Geo ...
Draw Invalidating Bounds debug view mode for Virtual Shadow Maps is gone in 5.4
UE - Graphics Features - Shadows - Jun 9, 2024The CVar "r.Shadow.Virtual.Cache.DrawInvalidatingBounds" referenced in the official 5.4 documentation for virtual shadow maps, no longer shows any bounds as the underlying code seem to be removed in ...
Converting Project from 4.11 to 4.12 and Above Changes Relative Scale of Sockets to 1
UE - Gameplay - Sep 21, 2016When converting a project from 4.10/4.11 to 4.12(or later) the relative scale of the sockets on skeletal meshes will be changed to 1,1,1 regardless of the previous settings. ...
"Skip Assigning Gamepad to Player 1" Setting causes Force Feedback events to be incorrectly routed
UE - Gameplay - Input - Mar 13, 2018The engine still uses the default index for calling force feedback events, despite them being assigned from player 1 on out. Which is why event on player 1 goes to player 0, event on player 2 goes t ...
Dynamic Obstacle Blueprint components do not correctly affect navmesh in standalone mode
UE - AI - Jul 21, 2015Static mesh components of blueprints with "Is Dynamic Obstacle" set to true do not correctly affect navigation when standalone mode is initially run. Once another object is moved and the navmesh is ...
Foliage 'BlockAll' instanced static meshes do not affect NavMesh
UE - AI - Navigation - Feb 27, 2024When placing static mesh foliage and setting the foliage mesh's Collision Preset to Block All, the placed meshes do not consistently block parts of the nav mesh. Expected: Placed meshes (for examp ...
Swarm Agent Binaries Missing in Launcher 5.7 Preview
UE - Foundation - Build - Rocket (Installed Engine) - Oct 23, 2025The Swarm binaries are missing from Engine\Binaries\DotNET in the 5.7 Preview launcher version of the engine. This causes any lighting build or precomputed static visibility builds to fails due to t ...
UV Import layout error increases with movement of UVs away from 0-1 Space
Tools - May 27, 2015When a user sets up an unwrap using a space outside the original 0 to 1 space the unwrap will increasingly show errors of positioning. For Example, in the following images the lower left vertex of ...
Destroying a welded actor is causing an Array index out of bounds crash on 5.6
UE - Simulation - Physics - Jul 30, 2025Destroying a welded actor is causing an Array index out of bounds crash on 5.6. The licensee has provided a repro project that reliably causes a crash whenever the spawned actor is destroyed. There ...