Unreal Engine Issues
Unreal Engine Issues
ConstructorHelpers::FObjectFinder failing to compile with UPaperFlipbook
UE - Foundation - Core - Feb 21, 2017If ConstructorHelpers::FObjectFinder is used with UPaperFlipbook as its class specifier, compiling the code fails with the following error: Error C2664 'void ConstructorHelpers::ValidateObject(UObj ...
Animation curves on Montages are not remapped when using a 'Compatible' skeleton
UE - Anim - Runtime - Jun 27, 2023[Link Removed] From UDN: If you are using the new compatible skeletons feature and you have a Montage with an attribute curve on it, the curve is not correctly mapped to the target skeleton. So ...
Landscapes cause Vulkan crash related to GRHISupportsAttachmentVariableRateShading
UE - Rendering Architecture - RHI - Nov 7, 2022Binary (Installed Build)//UE5/Release-5.1 @CL22986940 I encountered this same crash when creating a landscape twice, but was not able to consistently reproduce it with those steps. I figured out th ...
On Hit Events are inconsistent/inaccurate when using Substepping most notably at lower frames per a second
UE - Simulation - Physics - Dec 9, 2021This is a regression Tested in: //UE4/Release-4.27 CL18319896 Binary //UE5/Release-5.0-EarlyAccess CL16682836 Binary Under the same conditions in UE4 the On Hit events fire accurately and as expect ...
Sequencer: No preview animation shown without an animation track
UE - Anim - Sequencer - Apr 2, 2019From User: "Sequencer: When using an animBP there's no animation at all (preview) without an animation in the animation track. Strangely enough the animation BP starts running if you add any animat ...
LODs screen sizes in legacy assets are incorrectly converted to all have the same value on load
UE - Editor - Content Pipeline - Sep 11, 2025When loading a static mesh asset created in an old version of Unreal (e.g. 4.10), all LODs have their Screen Size property set to the same value (approximately 1.5). This happens because the static ...
Foliage lightmaps for LODs does not look correct
UE - World Creation - Worldbuilding Tools - Foliage - Jun 21, 2016When using the foliage tool with any mesh that has a LOD the lightmap generates artifacts for the instance. The base LOD will have correct looking lightmaps, however when pulling back and seeing the ...
Selection Highlight cannot be disabled for Skeletal Meshes
Tools - Feb 7, 2017Selection highlight cannot be disabled for Skeletal Meshes. They will always have the outline selection and some tinted selection over their faces. Static Meshes do not exhibit this behavior. This ...
Audio in animation editor does not work properly
OLD - Anim - Apr 21, 2017There are multiple issues with the code at present 1) The animation preview world listener is not updated. This can be solved with the following override on AnimationEditorViewportClient (Following ...
Favorites category in the Palette Panel of a Widget is no longer appearing
UE - Editor - UI Systems - UMG - May 26, 2023This is not a regression tested in //UE5/Release-5.1 CL23901901 When Favoriting a Component from the Palette panel of a Widget the Favorites category appears then disappears. For the brief moment i ...