Unreal Engine Issues
Unreal Engine Issues
Viewport focus is not updated when the mouse leaves the current window.
Tools - Oct 14, 2015The viewport focus does not return false when the mouse leaves the screen and clicks somewhere else. ...
Local lights appear broken when baking lighting with GPU Lightmass
UE - Graphics Features - Jun 2, 2025Encountered an issue where local lights appear to be broken when baking lighting with GPU Lightmass. See screenshots attached. Tested regression in //UE5/Release-5.5 @ CL40574608 and the issue does ...
Sequencer fails to package during Build command for ASTC
UE - Platform - Mobile - Jan 15, 2017When attempting to test for ESDSR on Android, the Sequencer project fails to package towards the end of the Build Command. Runtime/OpenGLDrv/Public\OpenGLESDeferred.h(267,5) : warning: 'OPENGL_ES2 ...
Material Editor: Highlight/Isolate should warn user when using Nanite Mesh
UE - Graphics Features - Nanite - Oct 27, 2022Editor should visually warn the user that this feature doesn't work with Nanite, or that the Nanite Preview mesh needs to be enabled (or forcibly enable it when they attempt to use this option), oth ...
Projectiles transferring additional velocity when stepped on.
UE - Gameplay - Jul 10, 2015If a player steps on projectiles they have their velocity overridden and are launched away from the projectile. ...
Functions overriden from Parent BPs are not called in Child BPs when nativized
UE - Gameplay - Blueprint - Jul 2, 2018When nativization is enabled, functions in a child blueprint that were overriden from the parent are not called properly. Regression?: Yes This did not occur in 4.19 ...
Package does not load using Vulkan on Oculus Quest
UE - Platform - XR - Jul 31, 2019When attempting to open a package using Vulkan, the application is loading and never opens. This happens for Launch On as well. This issue may be related to [Link Removed]. I was not able to reprod ...
Crash on loading pre-4.20 cloth data when compute skin cache is enabled in 4.21
UE - Graphics Features - Mar 19, 2019According to information from the licensee, the else clause was added to "FSkeletalMeshLODModel::(GetClothMappingData()" at CL 4437969 , but if it is the cloth data existing from 4.20 or earlier, it ...
Normal tangents aren't recalculated on skeletal meshes with bone transforms when recompute tangent is enabled
UE - Graphics Features - Nov 9, 2016Enabling recompute tangents on a skeletal mesh does not recompute tangent normals for translated parts of the skelmesh. If you addr.SkinCache.CompileShaders=1r.SkinCache.Mode=1r.SkinCache.Recompute ...
Child actor component removed when changing the class of a child actor component
UE - Gameplay - Components - Mar 27, 2017Child actor component removed when changing the class of a child actor component. Only the default class for the child actor component is used. If the user attempts to change the class the child act ...