Unreal Engine Issues
Unreal Engine Issues
Crash when deleting a mesh component of the mesh we are painting (SM and SK)
UE - Editor - Content Pipeline - Asset Build - Dec 9, 2021Unable to delete actors in World Partition due to UFunction references
UE - World Creation - Worldbuilding Tools - World Partition - Sep 28, 2022see description in [Link Removed] ...
Level editor viewports crash when deleting actors after a layout change
UE - Editor - Apr 18, 2022Reported by a customer while testing USD import. See additional URL ...
Crash when a material with a texture parameter is deleted when it has instances with static permutations
UE - Graphics Features - Dec 28, 2016This was the simplest solid repro I could get on this bug. The callstack is similar to [Link Removed] Also came across several Shader Compiling Manager crashes while attempting to repro this crash ...
Editor crash when adding a spline component after having deleted another spline component
UE - Gameplay - Sep 26, 2016After adding a duplicate spline point, removing the spline component while the duplicated point is selected and creating a new spline in its place causes the editor to crash. Crash Reporter: [Link ...
Rename BP in Content Browser causes actor to not load in WP map
UE - World Creation - Worldbuilding Tools - World Partition - Sep 28, 2022When trying to load the actor, the warning "Can't load actor guid from package" will show. In FWorldPartitionActorDesc::Load, it's unable to find the object: Package = LoadPackage(Package, *Ac ...
[Crash]-[Reimport] - Crash on reimporting CAD file with deleted light sources
UE - Editor - Content Pipeline - Datasmith - Importer - Jul 6, 2018The "Wrap Box" widget does not update the position of it's children when a widget's visibility is set to "collapsed"
UE - Editor - UI Systems - Apr 8, 2015If a user collapses a button that is inside of a wrap box widget the other buttons inside that wrap box will not adjust their positions to compensate for the missing button. In other widgets collaps ...
Crash when clicking "Reset to Default" button on the Details Panel for the MaterialAttributeLayers material node.
UE - Rendering - Architecture - Materials - Jul 15, 2025This crash repros from at least UE 5.3 and up to latest. The following assert is hit: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 1067] Array index out of bounds: 0 in ...
Crash after clicking the Build button on Linux
UE - Platform - Linux - Sep 17, 2019This crash is a regression from 4.22.3 (CL-7053642). If lighting is built by selecting "Build Lighting Only" the Editor will not crash. This does not reproduce on Windows with -vulkan. This was rep ...