Unreal Engine Issues
Unreal Engine Issues
Tilemaps with masked materials respond to lighting at incorrect directions
UE - Gameplay - Paper2D - Nov 19, 2018Tilemaps using lit methods of rendering are subject to strange lighting behavior. If the material for the tilemap is using a 'masked' method of rendering. Lighting will appear at incorrect angles. ...
[AI] WP Dynamic navmesh fails to rebuild tiles with actors that are loaded but not part of the base navmesh.
UE - AI - Navigation - Feb 18, 2025WP dynamic navmesh does not properly react to actors or navigation modifiers that are loaded in areas that the navmesh has not yet streamed into. Although the actors/modifiers are not part of the ba ...
Placing 'Groom' asset into scene results in assertion failed
UE - Graphics Features - Feb 10, 2020Dragging a groom asset into the level results in a crash. Link to Project: [Link Removed] Tested in: 4.25 CL#11223911 ...
Memory leak when Lumen is disabled but r.MeshCardRepresentation=1
UE - Graphics Features - Lumen - Jul 29, 2024When Lumen is disabled, but the cvar "r.MeshCardRepresentation" is set to 1, Lumen will continuously enqueue object removal from the Lumen Scene, without ever emptying the array of primitives to rem ...
Option "Use Mouse for Touch" does not work correctly when running the game in "Standalone" or "New Editor Window (PIE)" modes: Virtual joystick does not appear and mouse cursor is incorrectly hidden while captured.
UE - Gameplay - Input - Apr 1, 2025The Editor provides option "Project Settings – Engine – Input – Mouse Properties – Advanced – Use Mouse for Touch" to allow testing virtual joysticks and other touch controls with the mouse. When ru ...
Cannot compile nativized Blueprints containing a delegate signature that includes a TMap (paired) type as a parameter.
UE - Gameplay - Blueprint - May 15, 2018Paired types (e.g. TMap) in a delegate signature do not compile after nativizing a Blueprint class containing it due to the macro expansion and comma inside the template spec between key and value t ...
Crash While Running Project With d3ddebug Enabled (fix provided)
UE - Graphics Features - Mar 6, 2017A licensee encountered a crash during InjectTranslucentLightArray: according to them they fixed the issue in ShadowProjectionCommon.usf: /** Cube map texture. */ TextureCube<float> ShadowDepthCub ...
World partition mini map fails to build with an Unhandled Exception while using r.Raytracing.Nanite.Mode=1
UE - Graphics Features - Jan 31, 2023This is a regression. Tested in //UE5/Release-5.0 CL20979098 Build mini map fails with an Unhandled Exception while r.Raytracing.Nanite.Mode=1 is enabled in the DefaultEngine.ini. ...
Forward Shading: Scene Capture 2D crash when assigning a RGB Capture Source
UE - Graphics Features - Dec 12, 2016When using Forward Shading for the project, if you assign a source target to a SceneCapture2D and use either BaseColor in RGB or Normal in RGB the editor will crash. Tested with: Broken: 4.14.1 B ...
Delta struct serialized fast arrays replicating new elements with no changelist
UE - Networking - Jun 14, 2021There is a scenario where delta struct serialized fast arrays can replicate changes that introduce additional elements to the array, but without changelists containing the new data. This needs furt ...