Unreal Engine Issues
Unreal Engine Issues
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 ...
Failed Import Error Message Appears on Components in Child Blueprints
UE - Gameplay - Components - Dec 2, 2015Creating a C++ class based on actor and adding components to it will build successfully and work as expected. However, creating two child blueprints of a parent that is based on that C++ class and p ...
[CrashReport] Crash related to launching Tutorials - UE4Editor_Core!FText::FText()
Tools - Jul 5, 2017This is a common crash occurring in the 4.16.2 release. Records indicate this has also occurred in 4.16.0 and 4.16.1, but with less apparent frequency. User DescriptionsJust downloaded, clicking ...
Paper2D: Editor hangs when assigning Sprite Atlas Group to Sprite
UE - Gameplay - Paper2D - Dec 16, 2025In UE 5.3 and later, assigning a Sprite Atlas Group to a UPaperSprite asset can cause the editor to hang and eventually crash. This behavior has been reproduced in 5.3, 5.6, and a recent UE5-main so ...
Virtual texture thumbnails appears brighter (incorrect sRGB/gamma) in content browser after asset is loaded
UE - Editor - Dec 9, 2025This is a regression, it worked correctly up to UE 5.5 but behaves incorrectly in UE 5.6 up to latest. When a regular texture with sRGB enabled is converted to a virtual texture, its thumbnail in t ...
Landscape Tool crashes on Layer Import
UE - LD & Modeling - Terrain - Landscape - Mar 12, 2020The heightmap and weightmaps were created using Terresculptor, and exported in the correct format. If you import everything except the layermaps, the landscape is generated and the layers can be pai ...
[CrashReport] UE4Editor_Engine!UAnimMontage::IsValidAdditive() [animmontage.cpp:702]
OLD - Anim - May 19, 2016Error message: Stack overflow - code c00000fd (first/second chance not available) Source Context: 687 if (SyncGroup != NAME_None) 688 { 689 CollectMarkers(); 690 ...
In Persona, Viewport shortcuts remain default after changing Key Binding preferences
OLD - Anim - Dec 22, 2015After adjusting viewport shortcuts in Editor Preferences, the Persona viewport seems only partially responsive to the changes. It's as if the viewport shortcuts are hardcoded for Persona. Example ...
r.MobileContentScaleFactor appears to be ignored defaulting to 1 on Mobile Devices
UE - Platform - Mobile - Feb 28, 2022r.MobileContentScaleFactor = 0 should return Native Resolution; 1 should return Standard definiton; 2 shold return an High Definition Resolution. It seems that r.MobileContentScaleFactor is being i ...
Crash when pressing Ctrl-Z after creating a blueprint function
UE - Gameplay - Blueprint - Feb 20, 2017Crash when pressing Ctrl-Z after creating a blueprint function *This is a regression: Working in 4.14.3-3249277 Not working in 4.15.0-3299760* Crash Reporter: Error message: Access violation ...