Unreal Engine Issues
Unreal Engine Issues
Inserting before a FSlateImageRun twice will cause crash
UE - Editor - UI Systems - Apr 12, 2019NiagaraSystem with EniagaraGpuComputeTickStage::PostInitViews rarely crashes due to multi-thread race conflicts
UE - Niagara - Mar 1, 2025NiagaraSystem with EEiagaraGpuComputeTickStage::PostInitViews should not have bSupportsParallelGDME because of possible multi-threaded contention, but FNiagaraSystemInstanceController::GetGpuCompute ...
Memory Leak caused by auto save files
UE - World Creation - Worldbuilding Tools - World Partition - Mar 20, 2023Skeletalmesh generated LOD have issue with vertex color displacement
UE - LD & Modeling - Modeling Tools - Mesh Editing - May 22, 2020This one should be fix in the squeletalmesh quadric reduction own by the geometry tools. ...
Copy/paste of multiple components does not preserve component names or attachment hierarchy
OLD - Enterprise - Mar 9, 2016Copy/pasting scene components between blueprints loses: 1. The component name. 2. The parent/child hierarchy. It keeps the offsets, which is helpful. [image: Inline image 1] ...
Cannot Delete Landscape with World Partition enabled
UE - Graphics Tools - Terrain - Landscape - Jan 12, 2023If you delete all the LandscapeStreamingProxies under the landscape object the parent landscape object can be deleted. Not a regression checked in Version: 5.1.0-23058290+++UE5+Release-5.1 ...
Reintroduce UE4 Material Layer drag & drop behavior in UE5
UE - Rendering Architecture - Materials - Oct 19, 2023This behavior has changed from UE4 to UE5 due to a fix to an unrelated bug ([Link Removed]). Reintroduce the old behavior without causing a regression that reintroduces Ben's fixed bug. ...
'recompileshaders changed' doesn't work
UE - Graphics Features - May 7, 2021The issue is already fixed in UE5 by CL 14368553. This Jira is created for cherrypick into UE4 ...
[CrashReport] Crash after enabling the 'Composure' plugin
UE - Graphics Features - Jul 11, 2017This crash occurs in the 4.17 Preview 1 Binary editor after enabling the Composure plugin. User DescriptionsEnabled the Composure plugin (and restarted editor) in 4.17 Preview 1 ...
WorldPartitionConvertCommandlet hits an assert when converting a persistent level that contains a sub-level with a landscape
UE - World Creation - Worldbuilding Tools - Nov 7, 2025Context: The Window tab allows a user to open the Levels window in order to add a sub-level to a persistent level. For Unreal Engine 5.0 and beyond, World Partition has made the Levels window obsole ...