Unreal Engine Issues
Unreal Engine Issues
Ensure triggered in FBoundsCacheElement::GetValue when adding ISM instances in Construction Script
UE - AI - Oct 8, 2025An ensure is triggered in FBoundsCacheElement::GetValue when adding instances to an InstancedStaticMeshComponent inside a Blueprint’s Construction Script. This occurs when the ISM component is navig ...
Unable to save blueprint after Hot Reload that affects the class the blueprint is based on
UE - Gameplay - Blueprint - Sep 14, 2015After hot reloading a project, if the class a blueprint is based off of was edited, the blueprint is unable to be saved due to being referenced in Engine/Transient. Project for Repro: [Link Removed ...
Can Ever Affect Navigation does not detect updates to collision settings at runtime
UE - AI - Jan 27, 2016When a mesh has its collision updated during runtime the navigation around the mesh does not update. Workaround: If the mesh is set to simulate physics then updates to its collision will update nav ...
Subsurface shading model is broken when ray traced shadows are used in 5.1+
UE - Graphics Features - Ray Tracing - Apr 19, 2023Typos in Math_Hall of ContentExamples
Docs - Samples - Sep 20, 2016Need to update label from 0 to 1 on the left slider of display 1.6Need to update labels for small slider on display 1.10 to display 0, 1, 2 as those values can go up to 2Need to update 1.12 Example ti ...
Reflection Capture primitive invalidation in 5.3.1 causes massive hitches.
UE - Graphics Features - Nov 14, 2023Lyra 5.5 - LAS_ShooterGame_SharedInput has got a missing reference on InputMapping #1
UE - Gameplay - Input - Jan 27, 2025The templated Lyra project for 5.5 is missing a reference to IMC_Default_KBM on /ShooterCore/Experiences/LAS_ShooterGame_SharedInput because it looks like IMC_Default_KBM was renamed to IMC_Default. ...
Negative values in Display 1.7 of the Math_Hall map are not graphed correctly in ContentExamples
Docs - Samples - May 4, 2017This is a regression from 4.15.2 ...
Log Warning: LogRender:Warning: Missmatch between bShouldGenerateLowQualityLightmaps(0) and r.SupportLowQualityLightmaps(1)
UE - Graphics Features - Jul 13, 2016The issue occurs in //UE4/Main as well. This issue can be easily seen by opening any project at latest. It has been observed in new projects both with and without starter content. ...
Foliage deleted in 4.6 and 4.6.1 appears in 4.7
UE - World Creation - Worldbuilding Tools - Foliage - Dec 23, 2014Foliage that has been deleted in 4.6 will return when a project is migrated to 4.7. ...